Recently Active Questions

What is the number of matches to be played in a tennis tournament with n players? (assume there is no playoff for losers) i.e. no match for 3rd/4th position. Only the winners keep playing! ...

A disc of radius R is cut from a disc of radius 2R such that the edge of smaller disc touches the edge of original disc. What will be the centre of mass of left plate. ...

The government has recently introduced a Reservation for the Professors at IIT's after a newspaper report carried by a leading daily that IIT's were not following this norm!! ...

What do you think about this website? www.inky.co.nr You need to register in the forum to access the download section. You can find some really good ebook downloads here. Also check the studyroom for courses, they are the ...

if f(xy)=f(x)f(y) for all x,y in R. f'(1)=2 and f(4)=4 find f'(4) ...

if on an average 100 new phone connections are given in a city evey week. The phone numbers of the city are 6 digit long. (of course not starting with 0) How many days will it take for the exchange to exhaust of all numbers! ...

This question was from the test. I did not understand the solution. Could someone tell me the solution again? 1²-2²+3²-4²......... n& ...

'A' is a set containing n elements. A subset 'P' of 'A' is chosen. The set 'A' is reconstructed by replacing the elements. A subset 'Q' is again chosen. Now... ...

show that: (nCo)2 - (nC1)2 + (nC2)2-...(-1)n (nCn)2 =0, n is odd (-1)n/2 (nCn/2) , n is even here, where evr i have multiplied 2 with nC terms..their they are its power...and 'n' is also a power of -1 in the same ...

My friend gave this question yesterday.... pls tell me ... i have a bet with him! x2=x+x+x+.... n times.... take derivative of both side... 2x=1+1+1+... x times thus, 2x=x! ...

Q : A,B,C are 3 angles of a triangle. A=π/4 , tanB . tanC = p. find all possible values of p. my approach. B+C= 3π/4 so , tanB . tan(3π/4 - B) = p. tanB=x , x2 + x(1-p) + p =0 . for real roots. Δ≠...

If the normal at the point P(at2 , 2at) to the parabola y2=4ax cuts the circle drawn with PS as diameter at Q ( S- focus ) P.T. PQ = a√( 1+t2) ...

Given, (LL=f(y),UL=f(x))∫et dt = (LL=y,UL=x) ∫1/t dt, for all x,y belonging to (1/e2,∞) where f is continuous and differentiable function and f(1/e)=0. If g(x)={ ex, x≥k { ex2, 0<x< ...

Asked by Abhishek_bs difference btn differentiating l e^x l and e^lxl ...

solve sin-112x +sin-112√3x =sin-1(-1 ) ...

N = 2p*3q ( p nd q are on power) p,q bolong to natural no. 100<N<1000 then find the diff. in max. n mini. value of (p+q) ...

a particle of mass m is moving in a circular path of constant radius r such that its centripetal acceleration 'a' is varying with time as a=k2rt2, whr k is a constant. the power delivered to the particle by the fo ...

can nyone tell me........... if there are two COOH groups in one molecule, then how to change one to CH2OH keeping another intact?? plz help ...

a wind power generator converts wind energy to electrical energy. assume that generator converts a fixed fraction of wind energy intercepted by its blades into electrical energy. for wind speed v, the electrical power output ...

Have 2 check my answer... sin(3pi{x}) + tan(pi{x}) {x} is the fractional part of x. ...

Solve. 1. log((9x-x2-14)/7)(sin3x-sinx)=log((9x-x2-14)/7)cos2x 2. 2cos2(pi4x)-sin(pi4x+1)+sin(pi4x+1/2)-2cos(pi4x+1/2)=0 ...

∫(x+1)4/(x2+2x+3)3 dx ...

if the line y-√3x-3=0 cuts the parabola y2=x+2 at A and B, and if P=(√3,0), then PA.PB is equal to …? a) 2(3^0.5 +2)/3 b) 4(3^0.5)/2 c) 4(2 - 3^0.5)/3 d) 4(3^0.5 + 2)/3 ...

The first four ionization energies of an element are 191, 578, 872 and 5962 kcal. The no. of valence electrons in the element is : a) 1 b)2 c) 3 d) 4 . (plz give some short method to solve this question….. plz…..) ...

Firstly this not a lengthy question can be solved in 2-3 steps. Two towers of Height H and 2H separated by √3H what is the min velocity required to throw the ball from side of short tower so that it just touches small tower ...

A charged particle have a charge q enters a region in which there is a friction force which is proportional to the speed of particle. THe constant of proportionality of friction force is b. The particle stops traveling a dist ...

Let f :R
→
R be a function defined by f (x + y) = f (x) f ( y) for all x, y∈
R. If f (x) is continuous at x = 0, show that f (x) is continuous for all x∈
R ...

Integrate: ∫dx/[x^2(1+x^4)^3] THIS IS A WRONG QUESTION GIVEN BY FIITJEE.... QUIT IT.... ...

1) CH3COOC2H5 + C2H5ONa → (A) → iodoform reaction → (B) + (C) 2) correct order of increasing rate of hydrolysis of the foll compounds : (gv reasons) i) CH3COOEt ii) C2H5COOEt iii) iso-propyl-COOEt 3) when propanoic acid ...

What is FTSE? ...