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Last 100 threads by theprophet
7 Hrs 721/67·HAPPY BIRTHDAY: TODAY IS THE BIRTHDAY OF NISHANT SIR SO WISH HIM HAPPY BIRTHDAY
15 Hrs 8701/294·Bashing this site!: You can put down all your complaints.. errors on tests and anything that u dont like about this site.. on this thread. I will try to make it sticky so that it is always in the home page view! Or m..
1 Days 145/4·DIFFERENTIAL( HELP REQUIR..: 1) f'(x) = f(x) - ln x + 1/x 2) ( 1 + x√(x2 + y2))dx + ( -1 + √(x2 + y2) )y dy = 0 3) 2x3y dy +( 1 - y2)(x2y2 + y2 -1) dx = 0 [find the soln. of the above differential eqn.] [ PLEAZ DON..
2 Days 178/8·Own prob - Minimum AP Sum: Denote by Sk[/ss] the sum to k terms of an AP. If for some two indices m and n it is known that Sm[/ss]=Sn[/ss], for what index i, does Si[/ss] attain a real extremum.
2 Days 82/4·quadratic: (1) If c,d are the roots of the equation x2+ax+b=0 and a,b are the roots of the equation x2+cx+d=0 then find the value of a+2b+3c+4d =
2 Days 132/3·pieces on a chessboard: 8 pieces are placed on a chessboard such that no two pieces lie on the same row or column. Prove that an even number of pieces lie on black squares
3 Days 138/5·Find: http://latex.codecogs.com/gif.latex?\\\texttt{%20Given%20the%20three%20digit%20number%20}%20N=%20a_1a_2a_3..%20m_1,m_2,m_3%20\\\texttt{%20are%20the%20smallest%20possible%20natural%20number%20such%20th..
3 Days 109/6·equation: (1) find all real valuse of x and y that satisfy the equation x2-xy+y2-4x-4y+16=0 (2) all psitive Integral solution of y2+6xy-16x=0
5 Days 108/3·fns sbts: Q1 min value of f(x)=[sqrt]a2cos2x+b2sin2x[/sqrt]+[sqrt]a2sin2x+b2cos2x[/sqrt] Q2 What is condition so that f(x)=ax3+bx2+cx+dsinx is one one fn
5 Days 225/14·The Dark Knight has a pro..: Q. For some Natural No. N the no. of positive integral 'x' satisfying the equation 1! + 2! + 3! + ....... + (x!) = (N)2 is: A) None B) one C) two D) infinite I've found the values of x ..
6 Days 153/5·Two Polynomials: Consider the polynomials http://codecogs.izyba.com/gif.latex?f%28x%29%20%3Da_1%20+a_2x+a_3x%5E2+a_4x%5E4[/im] and http://codecogs.izyba.com/gif.latex?g%28x%29%20%3Db_1%20+b_2x+b_3x%5E2+b_4x%5E4[/i..
6 Days 127/6·min Value: find the min possible value of http://codecogs.izyba.com/gif.latex?\left|z%20\right|^2+\left|z%20-3\right|^2+\left|z%20-6i\right|^2[/im]
7 Days 107/3·Biquadratic: Let n is a positive integer greater than 7 and let f(x) is a biquadratic polynomial with http://alt1.mathlinks.ro/latexrender/pictures/8/e/b/8eb4a2692c7dcada55c8804b4693177551c27598.gif[/im] and http..
8 Days 114/2·Trigonometrical expansion: If tan x = n tan y , then prove that x = y - m sin 2y + [frac]m22[/frac] sin 4y - [frac]m33[/frac] sin 6y + . . . . . . . . . . . . . where m = [frac]1 - n1 + n[/frac] .
8 Days 161/6·PC recurrenece : [image]43102503.jpg[/image]
9 Days 192/9·Definite...: http://codecogs.izyba.com/gif.latex?%5Cint_%7B0%7D%5E%7B2%5Cpi%7D%7Be%5E%7Bcos%5Calpha%7Dcos%28sin%5Calpha%29d%5Calpha[/im].
9 Days 180/8·functions and matrices: Q1. http://latex.codecogs.com/gif.latex?\textup{If&space;A=}\begin{bmatrix}&space;a&space;&&space;b&space;&&space;c\\&space;b&space;&&space;c&space;&&space;a\\&space;c&space;&&space;a&space;&&space;b&..
12 Days 183/7·Solve this set of equatio..: This is for class IX X only a(a+b+c) = 10 b(a+b+c) = 12 c(a+b+c) = 14 Find a, b, c
13 Days 190/5·brilliant tutorials test ..: If y=f(x) be concave upward function and y=g(x) be a function such that f'(x).g(x)-g'(x).f(x)= x^4+2x^2+10, then a) g(x) has atleast one root between two consecutive roots of f(x) b) g(x) has at..
13 Days 161/17·IIT Question: IF (sin4x)/2+(cos4x)/3=1/5 then (a)tan2x=2/3 (b)sin8x/8+cos8x/27=1/125 (c)tan2x=1/3 (d)sin8x/8+cos8x/27=2/125??? It's mulit ans question...
13 Days 146/10·quad : *** Q3 is dbt only.....rest i have done... *** Q1 Determine sign of roots of equation x2+(3-2a)x-3a+2=0 Q2 If a,b,c are odd integers prove that both roots of ax2+bx+c=0 can not be rational ..
13 Days 93/5·FIND MINIMUM.: min [ (x1[/ss] - x2[/ss])2 + ( 5 + √(1 - x1[/ss]2) - √(4x2[/ss])2 ] for all x1[/ss] & x2[/ss] belongs to R is...............
14 Days 45/2·INTEGRATION.( D-120 - 6 ): [image]42414215.jpg[/image]
14 Days 84/4·VALUE OF k: Value of k for which kx2 - 2kx + 3x - 6 is positive for exactly two integral values of x is..................
14 Days 84/5·AAKASH AITS ( FUNCTION ): [image]42498235.jpg[/image]
15 Days 263/10·sqaures: http://codecogs.izyba.com/gif.latex?a_%7B1%7D%5E%7B2%7D+%20a_%7B2%7D%5E%7B2%7D+a_%7B3%7D%5E%7B2%7D%3D%2025[/im] http://codecogs.izyba.com/gif.latex?b_%7B1%7D%5E%7B2%7D+b_%7B2%7D%5E%7B2%7D+b_%7B3%7D..
16 Days 115/5·definite: Given a function f : [0,4] ----> R is differentiable , then for some http://codecogs.izyba.com/gif.latex?%5Calpha[/im] , http://codecogs.izyba.com/gif.latex?%5Cbeta[/im] http://codecogs.iz..
17 Days 113/5·aits question: 1..if f:R→R be a differential finction such that that f(2-x)=f(x) and f(5-x)=f(5+x) then http://codecogs.izyba.com/gif.latex?1.f%27%28-3%29%3D0[/im] 2..f'(9)=0 .http://codecogs.izyba.com/g..
17 Days 265/11·Inequality: Prove that http://codecogs.izyba.com/gif.latex?%28%5Csin%20%5Cgamma%20+%20a%20%5Ccos%20%5Cgamma%29%28%5Csin%20%5Cgamma%20+%20b%20%5Ccos%20%5Cgamma%29%20%5Cle%201%20+%20%5Cleft%28%20%5Cfrac%7Ba+b%7D%7B..
18 Days 70/2·inequality: if x^{5}-x^{3}+x=k then prove that x^{6}≥ 2k-1
20 Days 338/21·IIT JEE and AIEEE to be m..: http://in.news.yahoo.com/43/20100216/812/tnl-iit-jee-likely-to-be-abolished-by201.html New Delhi, Feb 16 (IANS) The joint entrance examination (JEE) for admission to the Indian Institutes of ..
20 Days 92/6·integral !!!!: i know this is not directly integrable, bt i'm nt getting any way to directly derive this relationship ifhttp://codecogs.izyba.com/gif.latex?%5Cint_%7B0%7D%5E%7B1%7D%7B%5Cfrac%7Be%5E%7Bt%7D%7D%7Bt+..
20 Days 68/3·triggno dbts...: Q1 If roots of x3-px2-r=0 are tanα,tanβ,tanγ ,find value of sec2α.sec2β.sec2γ I did by converting secx into tanx and then using equation to solve ......any better method ?? Q2 Prove that..
20 Days 94/2·itchy iteration...: Let a1[/ss]=0 and a2[/ss]=1. an[/ss]=[frac]n2[/frac]an-1[/ss]+[frac]n2[/frac](n-1)an-2[/ss]+(-1)n(1-[frac]n2[/frac]). Find f=an[/ss]+2 nC2[/ss]an-1[/ss] +3 nC3[/ss]an-2[/ss]+...+na1[/ss].
21 Days 110/8·PLEASE TRY IT.(Aakash AIT..: Two charges +q1[/ss] and -q2[/ss] are placed at A and B respectively. A line of force emanates from +q1[/ss] at an angle http://codecogs.izyba.com/gif.latex?%5Calpha[/im] with AB. At what angle http:..
21 Days 189/10·Quadratic modulus...: http://codecogs.izyba.com/gif.latex?f%28x%29%3Dax%5E2+bx+c[/im] Given http://codecogs.izyba.com/gif.latex?%7Cf%28x%29%7C%20%5Cle%201[/im] http://codecogs.izyba.com/gif.latex?%5Cforall%20x[/im] http..
21 Days 78/2·Number of solns. try it(t..: If x, y http://codecogs.izyba.com/gif.latex?%5Cvarepsilon[/im] ( 0,http://codecogs.izyba.com/gif.latex?%5Cpi[/im]) and (sin 3 x + sin 4 y) + 3 cosec x + 4 cosec y - 9 =0, then no. of solutions of the ..
22 Days 71/6·Number of solns.(trigonom..: Number of solutions of the equation http://codecogs.izyba.com/gif.latex?%5Cmid%20x-1%5Cmid%20+%20%5Cmid%20x%5Cmid%20+%20%5Cmid%20x+1%5Cmid%20%3D%20%5Cmid%20sinx%5Cmid%20+%20%5Cmid%20cosx%5Cmid[/im] i..
22 Days 320/11·some integrals : evaluate !!!!!!!!!!!!!! 1. http://codecogs.izyba.com/gif.latex?%5Cint%20%5Cfrac%7B3x%20%5E2%20-%207%20dx%7D%7B%20%28x%5E2%20-4%29%20%28%20x%5E2%20+%201%20%29%20%7D[/im] 2 . http://codec..
22 Days 68/5·P2 36: INTEGER ANS TYPE 1) Let f(x) = 30 - 2x - x3 , then find the number of positive integral values of x which satisfies f ( f ( f ( x ) ) ) > f ( f ( -x ) ) .
23 Days 123/2·again ap gp.............: [image]41405897.jpg[/image] ans b
23 Days 85/6·Explaination: If S=1+2+4+8+16+...∞.Then S is a positive number.Multiply both sides by 2,then it is found that 2S=S-1 which leads to conclusion that S=-1 which is certainly negative.Do you agree with conclusion?Gi..
23 Days 103/5·Recurrence Problem: TRY THIS QUESTION: A recurrence satisfies http://codecogs.izyba.com/gif.latex?a_%7Bn+1%7D%3Da_%7Bn%7D+%5Csqrt%7B1+a_%7Bn%7D%7D[/im] then Obtain an explicit formula for http://codecogs.izyba.co..
26 Days 203/7·polynomial: [image]40861106.jpg[/image]
27 Days 323/10·Recurrence Problem: A recurrence satisfies http://codecogs.izyba.com/gif.latex?a_%7Bn+1%7D%20%3D%20a_n%20+%20%5Csqrt%7Ba_n+a_%7Bn+1%7D%7D[/im] a1[/ss] =1 Obtain an explicit formula for an[/ss] i.e. find a function ..
27 Days 88/3·very easy from number th..: . Let n be a positive integer and let a1, . . . , ak (k ≥ 2) be distinct integers in the set{1, . . . , n} such that n divides ai(ai+1−1) for i = 1, . . . , k−1. Prove that n does not..
27 Days 170/5·AITS QUESTIONS------: 1..FIND THE MIN. VALUE of [frac]A+3CA+2+C[/frac]+[frac]4BA+B+2C[/frac]-[frac]8CA+B+3C[/frac] (A,B,C.ε R+) 2..IF A={zεC:Z=X+Xi-1 FOR X ε R } AND MOD(Z)≤MOD(ω) FOR ω ε A THEN Z IS
29 Days 145/6·AITS complex nos: plz solve A(z1[/ss]) , B(z2[/ss]) and C(z3[/ss]) are 3 points lying on the curve |z|=[sqrt]3[/sqrt] 1. If z2z1[/ss]+ z2[/ss]z + z3[/ss]=0 has one root of modulus unity. z1[/ss],z2[/ss],z3[/s..
29 Days 431/14·Reccurence: 1)find the nth term of the sequencehttp://alt1.mathlinks.ro/latexrender/pictures/2/0/4/204ce731395b7a900761580e85c5e88c4a8582d1.gif[/im]such that http://alt2.mathlinks.ro/latexrender/pictures/f/2/f/f2..
31 Days 88/1·aits question: 1..THE POSITIVE REAL FUNCTION SATISFIES [frac]F(X)F(Y)[/frac]≤7(X-Y)2 FOR X , Y BELONG TO ITS DOMAIN ,F(3/2)=[frac]Π4[/frac] THEN 1.F(X)=[sqrt]X[/sqrt]+X3 2.F'(7)=0 3.F(X)=∫sin-1[sqrt]t[/sq..
32 Days 139/5·quadratic expression: (1) find all Integral value of x for which the expression http://codecogs.izyba.com/gif.latex?x%5E%7B2%7D+7x+13[/im] is a perfect square. i have got only one solution x= - 4 is there is any..
33 Days 165/4·Determinant-: http://latex.codecogs.com/gif.latex?\\\texttt{If}%20\:%20f_{n}=\sum_{k=0}^{n}\binom{n-k}{k}%20\\\texttt{evaluate}\\%20\\%20\begin{vmatrix}%20f_{n}&%20f_{n+1}&f_{n+2}%20\\%20f_{n+1}&%20f_{n+2}&f_{n+3}\..
34 Days 370/7·algebra: Q1. The value of http://codecogs.izyba.com/gif.latex?%5E%7B100%7DC_%7B0%7D%5C%3B%20%5E%7B200%7DC_%7B100%7D%20-%20%5E%7B100%7DC_%7B1%7D%5C%3B%20%5E%7B199%7DC_%7B100%7D%20+%20%5E%7B100%7DC_%7B2%7D%5C%..
34 Days 391/15·trigo dbts: Q1. http://codecogs.izyba.com/gif.latex?18tan%5E%7B16%7D%5Cfrac%7B%5Cpi%20%7D%7B18%7D%20-%20816tan%5E%7B14%7D%5Cfrac%7B%5Cpi%20%7D%7B18%7D%20+%20...%20-%20816tan%5E%7B2%7D%5Cfrac%7B%5Cpi%20%7D%7B18%7D..
35 Days 137/6·modulus equation: (1) find all real values of x,y and z in http://codecogs.izyba.com/gif.latex?x%5E%7B2%7D-%5Cleft%7Cx%20%5Cright%7C%3D%5Cleft%7Cyz%20%5Cright%7C[/im].......(1) http://codecogs.izyba.com/gif.latex?y..
36 Days 179/8·Number of solutions: Find the number of solutions of the system of equations : {x}+y+ = 2.3, +{z}+x = 4.5, {y}++z=6.2 where {} and [] denote the fractional and greatest integer function respectively. Also find the..
38 Days 199/5·1+1+1=3: [image]40162963.jpg[/image]
38 Days 71/2·Greatest value: find teh greatest value of the expression http://codecogs.izyba.com/gif.latex?%28a-x%29%28b-y%29%28c-z%29%28ax+by+cz%29[/im]where a,b,c are known +ve quatities and http://codecogs.izyba.com/gif.latex?..
39 Days 134/7·equation: (1) Find (+ve) integral solution of the equationhttp://codecogs.izyba.com/gif.latex?3x%5E%7B2%7D-2xy+7y%5E%7B2%7D%3D0[/im]
40 Days 126/2·integral : http://codecogs.izyba.com/gif.latex?%5Cint%20%5Cfrac%7Bdx%7D%7B%281+%5Csqrt%7Bx%7D%29%5Csqrt%7Bx-x%5E%7B2%7D%7D%7D[/im]
40 Days 115/3·Easy one for olympiad asp..: If 4x-y is divisible by 3, prove that 4x2+7xy-2y2 is divisible by 9.
40 Days 79/4·alg dbts: 1)If a>0>b>c & the system of eqn ax+by+cz,bx+cy+az=0,cx+ay+bz=0 has a non trivial soln,then find nature of roots of (b+c)t2+(c+a)t+a+b=0 . From first 3 eqns i got a+b+c=0 what next ?? 2) ..
41 Days 55/2·Integration: (1) Let http://codecogs.izyba.com/gif.latex?I%3D%5Cint_%7B1/2%7D%5E%7B2%7D%7B%5Cfrac%7Bln%28t%29%7D%7B1+t%5E%7Bn%7D%7D%7Ddt[/im], find the sign of Integral for different values of http://codecogs.izy..
42 Days 73/3·quadratic..................: The integral values of a for which the quadratic equation (x – a)(x – 10) + 1 = 0 has integral roots are a. -1, 3 b. 2, 3 c. 12, 8 d. -8, -12
43 Days 255/11·nice one (but easy): Q1. If http://codecogs.izyba.com/gif.latex?f%28x%29%20%3D%20x%5Cint_%7B0%7D%5E%7B1%7D%7Bf%28x%29%7Ddx%20+%20%5Cint_%7B0%7D%5E%7B2%7D%7Bf%28x%29%7Ddx-5[/im] , and the area of the region bounded by y= f..
44 Days 606/14·INMO 2010: [image]39248122.jpg[/image]
45 Days 247/8·number of solutions: Number os solutions of the eqn tan x+ sec x= 2cos x , lying in the interval [0,2∩) is a) 0 b)1 c)2 d)3
46 Days 206/7·FIND-----: http://latex.codecogs.com/gif.latex?f(x)=\frac{3a}{x+a}+\frac{4b}{x+b}-\frac{5c}{x+c}-\frac{6d}{x+d} [/im] is divisible by x2 the find the value of http://latex.codecogs.com/gif.latex?\frac{3}{a}..
47 Days 116/3·Number of divisors functi..: This is fun to work out. Let http://codecogs.izyba.com/gif.latex?%5Ctau%28m%29[/im] represent the number of divisors of the natural number m. Then prove that http://codecogs.izyba.com/gif.latex..
48 Days 177/2·BINO::-: find-http://codecogs.izyba.com/gif.latex?%5Csum_%7Br%3D0%7D%5E%7Bq%7D%28%7B%5E%7Bq%7DC_%7Br%7D%7D%29.%28%5E%7BN%7DC_%7Bn-r%7D%29.%28a%5E%7BN-n+r%7D%29[/im] ???
48 Days 67/4·Quadratic: 1.If roots of ax^2-bx+c=0 lies between 0 and 1 P.T: log abc>2 5
48 Days 72/2·inequality: 1.find min value of:secA+secB+secC where A+B+C=PI.
49 Days 123/6·dbts.....algebra: Q1 http://codecogs.izyba.com/gif.latex?x_n%3D1%5E2-2%5E2+3%5E2-....+%28-1%29%5E%7Bn-1%7Dn%5E2[/im]. Find x101[/ss] Q2 Find no of roots of (2.4)x=(2.6)x-1 Graphically it appears that one soln.....
50 Days 144/8·Find roots: Find all roots of the polynomial http://codecogs.izyba.com/gif.latex?4x%5E6%20-%206x%5E2+2%5Csqrt%202%20%3D%200[/im]
50 Days 358/19·nice one: here's a simple one prove that a number with 3^m equal digits is divisible by 3^m
50 Days 240/17·Maximum Value: If x,y,z are positive reals satisfying http://codecogs.izyba.com/gif.latex?x+y+z%3D1[/im], find the maximum value of http://codecogs.izyba.com/gif.latex?%281-x%29%282-y%29%283-z%29[/im].
51 Days 316/12·Region of roots: Find the number of roots of the equation http://codecogs.izyba.com/gif.latex?z%5E7+4z%5E2+11%3D0[/im] satisfying http://codecogs.izyba.com/gif.latex?1%3C%7Cz%7C%3C2[/im]
51 Days 224/9·ques....need shortest sol..: i need the best and shortest methods to solve these in exma hall... Q1 Let http://codecogs.izyba.com/gif.latex?P%28x%29%3Dx%5E5+x%5E2+1[/im] have roots http://codecogs.izyba.com/gif.latex?x_1%2Cx_2..
53 Days 289/8·locus of the complex numb..: http://codecogs.izyba.com/gif.latex?z%3D%5Cfrac%7B3%7D%7B2+cos%5Ctheta%20+%20i%20%5Csin%5Ctheta%20%7D[/im] the locus of z is ?
53 Days 109/5·functions: if f'(x/y).f(y/x) = http://codecogs.izyba.com/gif.latex?%5Cfrac%7Bx%5E%7B2%7D+y%5E%7B2%7D%7D%7Bxy%7D[/im] for all x,y belongs to positive R and f(1)= 1 then f2(x) is?????????
53 Days 70/3·complex nos.: the number of ordered pair (a,b) such that (a + ib)^2010 = a - ib is???
53 Days 74/2·INMO 2010: Could anyone post the questions please? I am told it was held today.
54 Days 103/4·good an' simple: Good an' simple --- try this one --- Given four distinct numbers in the interval (0,1) , show that there exists 2 numbers among them x and y , such that ------ http://codecogs.izyba.com/gif...
54 Days 147/3·find::::: sum of the series http://codecogs.izyba.com/gif.latex?%5Cfrac%7B1.2%7D%7B3%21%7D+%5Cfrac%7B2.2%5E2%7D%7B4%21%7D+%5Cfrac%7B3.2%5E3%7D%7B5%21%7D+............%5Cinfty[/im]
54 Days 162/0·Compleksh::::: let Zr[/ss],r=1,2,3.....n are n distinct roots of eq http://codecogs.izyba.com/gif.latex?%5E%7Bn%7DC_%7B1%7Dx+%5E%7Bn%7DC_%7B2%7Dx%5E%7B2%7D+%5E%7Bn%7DC_%7B3%7Dx%5E%7B3%7D+.......%5E%7Bn%7DC_%7Bn%7Dx%..
54 Days 410/15·goodie: let teh 3 sides of a triangle be integers l,m,n respect...satisfying l>m>n and http://codecogs.izyba.com/gif.latex?%5Cleft%5C%7B%5Cfrac%7B3%5E%7Bl%7D%7D%7B10%5E%7B4%7D%7D%20%5Cright%5C%7D%3D%20%5C..
54 Days 294/3·divisible?: find the least positive integer m such that 22000 divides 2003m-1
55 Days 118/6·A simple one: Let http://codecogs.izyba.com/gif.latex?P%28x%29%3Dx%5E5+ax%5E4+bx%5E3+cx%5E2+dx+e[/im]. If the graph of y = P(x) cuts the x-axis at five distinct points and P(0)=0, then which of the coefficients ca..
55 Days 84/3·induction : n to the power p -n;divisible by p. p is a prime number. prove it
56 Days 284/10·geometrical inequality!!: prove that http://codecogs.izyba.com/gif.latex?%5Csqrt%7B%28x_1-x_2%29%5E2+%20%28y_1-y_2%29%5E2%7D%5Cle%20%5Csqrt%7Bx%5E2_1+y%5E2_1%7D+%20%5Csqrt%7Bx%5E2_2+y%5E2_2%7D[/im] for all real numbers http:/..
57 Days 123/1·prove inequality : http://codecogs.izyba.com/gif.latex?if%20%5C%20a+b+c%20%3D1%20%2C%3B%20a%2Cb%2C%20c%20%5Crightarrow%20R%5E+%20%5C%5C%20prove%20%5C%20that%20%5C%20%5C%5C%20%5C%5C%20%5Csum_%7Bcyclic%7D%7B%7D%20%7B%5Cfr..
58 Days 107/7·even/odd: [image]38784214.jpg[/image]
58 Days 218/6·Inequality: If xy+yz+zx = 3, prove that http://codecogs.izyba.com/gif.latex?%5Csqrt%7B1+x%5E4%7D%20+%20%5Csqrt%20%7B1+y%5E4%7D%20+%20%5Csqrt%20%7B1+z%5E4%7D%20%5Cge%203%20%5Csqrt%202[/im]
61 Days 147/4·AP Problem: The set of integers is divided into n infinite APs. If the common differences of the APs are denoted by di[/ss], find http://codecogs.izyba.com/gif.latex?%5Csum_%7Bi%3D1%7D%5En%20%5Cfrac%7B1%7D%7Bd..
62 Days 727/14·~some doables~: 1) find the sum of the series http://codecogs.izyba.com/gif.latex?%5Cfrac%7B1%7D%7B4%21%7D+%5Cfrac%7B4%21%7D%7B8%21%7D+%5Cfrac%7B8%21%7D%7B12%21%7D................%5Cinfty[/im] 2) if a functio..
62 Days 135/4·Complex Numbers: Good prob flicked from another forum: Given complex numbers a,b,c,d such that http://codecogs.izyba.com/gif.latex?%5Cfrac%7Ba-d%7D%7Bb-c%7D[/im] and http://codecogs.izyba.com/gif.latex?%5Cfrac%7Bb-..
62 Days 201/7·triplet: If sinx=cosy,[sqrt]6[/sqrt]siny=tanz,2sinz=[sqrt]3[/sqrt]cosx ; u,v,w denote respectively sin2x,sin2y,sin2z,then value of triplet (u,v,w) is ?
62 Days 153/6·Range: Find range of y given that y=2tan-1x+sin-1[frac]2x1+x2[/frac]
63 Days 140/5·Monotonic?: f is a continuous function that maps the closed unit interval I = [0,1] into itself. Prove that if f(f(x)) = x for all x ε I, then f is monotonic
66 Days 212/10·Reciprocal Eqns............: Q1 : If p(x) is a reciprocal polynomial of odd degree , then one of the roots of p(x)= 0 , is ?? Q2: Sum of rational roots of x5 = (133x - 78) / (133 - 78 x )