Recently Active Questions

\mathbf{\lim_{n\to\infty}\left\{\left(\sqrt{3}+1\right)^{2n}\right\}}=$\\\\ \textbf{Where $\mathbf{\left\{.\right\} = }$Fractional part of $\mathbf{x}$} ...

The reason why Alkyl Halides undego substitution reactions is that C-Halogen bond is polar. Electronegativity of C=2.5 and that of Iodine is 2.5 as well!So,how about Alkyl iodides? ...

(1 + tan5°) (1 + tan10°) (1 + tan15°).........( 1 + tan45°) = 2k , then k equals ___ then answer is an integer (0 - 9) ...

can anyone please tell me any website from where i can get bitsat previous year question papers ...

The order and degree of the D.E. (y+c)2=cx is? I got the answer as 2,1 resp. but the answer given is opposite. What do you say? ...

If log5k+log35+log1x= 1 then, find the value of x... ...

Are there any good books in physical chemistry for iitjee available online for free? if yes,pls provide the link also..... ...

$\textbf{If} $\mathbf{f(x)=sin\left(\frac{2x}{1+x^2}\right)+cos\left(\frac{4x}{1+x^2}\right)+1}$\\\\\\ \textbf{Then find Max. and Min. value of f(x)}. ...

1. if a1 , a2 , a3 ... a7 are seven not necessarily distinct real numbers such that 1<ai<13 , prove that we can construct a triangle with its sides with length ai 2 If Nn denote the nth son square integer so that N1=2 , ...

(i)(x^2+x-2)^4+(2x+1)^4=(x^2+x-1)^4\\\\ (ii)(x^2+3x+2)(x^2+7x+12)+(x^2+5x-6)=0 ...

I C or Instantaneous Centre of Rotation It is a simple theory to make problems of specific type easier......... if wisely used..... It states When a body is moving on horizontal floor with pure rolling, then it is as good as ...

let A denotes the value of expression X4 + 4X3 + 2X2 - 4X + 7 when X= cot11pi/8 and B denotes the value of expression ( 1- cos8y)/ tan24y + (1+cos8y)/ cot24y when y=9° the value of (A-B) is ____ the question is integer type ...

Actually I was reading Friction and in Rotation also I came across this term 'slipping'.Though I know the general meaning of slipping but I dont understand how it works.Like how is friction related to slipping and how is slip ...

\mathbf{\int_{0}^{1}\frac{dx}{x.(x+1).\left\{ln\left(1+\frac{1}{x}\right)\right\}^{2011}}}=$ ...

A light rigid rod is placed on a smooth horizontal surface. Initially the end A begins to move vertically upward with constant velocity v and centre of the rod upward with a velocity v/2 having downward acceleration a/2. The ...

which is better- jadavpur university or nit durgapur--- both in terms of academics and co - curriculars and placement,exposure, etc ?? ...

\mathbf{\int_{0}^{\pi}|sin(2x)-sin(3x)|dx=}\\\\ \textbf{Ans::}=\frac{5\sqrt{5}+4}{6} ...

$Solve The Equation $\mathbf{\sqrt{sinx}+sinx+sin^2x+cosx=1}$\\\\ \mathbf{Ans:=}::$\mathbf{x=2k\pi,\pi-sin^{-1}\left(\frac{\sqrt{5}-1}{2}\right)+2k\pi}$ Where $\mathbf{k\in \mathbb{Z}}$ ...

\mathbf{\int\frac{dx}{(x+2)^5(x+3)^3}=}$ ...

What is the method for finding out the outer electronic configuration of actinoids and lanthanoids? A question came in AIEEE 2011 asking the same for Gd. How do we find it? ...

There were an electrician and a plumber waiting in line for admission to the Home Show. One of them was the father of the other's son. How could this be possible? ...

*Image* ...

Is it possible to divide a given square into n squares for any n≥6? ...

st1: hno3 is strongr acid than hno2.' st2: in hno3, there are 2 nitrogen to oxgen bonds, but in hno2,there's only 1. in ans--st 2 is given correct.... pls confrm it shud be incorrect. thanx ...

The general trend in ionization enthalpies should be B>Al>Ga>In>Tl as first I.E. decreases down a group. But the actual trend is B>Al<Ga>In<Tl. why????? ...

You can find roads without cars, And roam through forests without trees, Cities exist without houses? Whatever can I be? ...

If S1,S2.....Sn be the sum of first nterms of n G.Ps whose 1st terms of each unity and C.R are 1,2,3.....n respectively prove S1+S2+2S3+3S4+.....(n-1)Sn= 1n+2n+3n+.....+nn. ...

Nothing on the outside Nothing on the inside Light as a feather Yet ten men cannot lift it. What is it? ...

share some computer tricks ...

plz give the link of the merit list and seat allotment of iit jee 2010 ...