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I look at askiitians.com only when I am VERY VERY BORED. But one post took me quite by surprise, when the student asked, if f:N→N is a strictly increasing function satisfying f(f(n)) = 3n for all n, find f(11). ...

The original article is here: http://www.outlookindia.com/article.aspx?209444 Contrary to popular belief, the vast majority of IITians do nothing of note in their lives. Indeed, many of them became IITians because their paren ...

hello guys! I am preparing for IIT JEE'09. I am a bit confused about whether to take test series or not? If yes which one should i take?? FIITJEE or Brilliant. I have heard giving FIITJEE is useless as they pu ...

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Find the sum of the infinite series... sin^3x+\frac{sin^33x}{3}+\frac{sin^33^2x}{3^2}+\frac{sin^33^3x}{3^3}+... (Hint recall the questions I have given during the last few days...) ...

A needle has a length of L meters is placed gently on the surface of the water(γ). What is the weight of the heaviest needle that can be floated ? ? (Very easy question. I gave this one so that you study surface tens ...

An easy one... Q.A rod is rotating about center with angular speed w. If the Young modulus of elasticity of rod is Y and length and cross sectional area is l and A respectively. Find the elongation in rod. *Image* ...

Let f(x) = 4x/4x+2 . What is the value of \sum_{1}^{1000}{f\frac{i}{1000}} Source: Chinese: 1986 ...

A block of ice containing a small air bubble floats in a pond.The ice melts.Does the water level go up,down or stay the same ? Explain. Ans the same question where the air bubble is replaced by a piece of lead. ...

In theory of nos there is a symbol inverted capital E what is that symbol?what is most imp from theory of nos for olympiad ...

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This is another problem from an online contest... (This is another of the unsolved problems.. which if not solve.. you should definitely give a good thought) Prague Physics Challenge, 2nd round Falling pen Imagine that you ar ...

give struct. of CrO5 ??????????? ...

Two concentric cylinder have a radius a and b. The charge on the cylinder is +q and -q. Another cylinder of radius (a+b)/2 is introduced between the two. The charge on this cylinder is +q/2. What is the capacitance of the arr ...

{x}2 + {y2} = 1 ...

{x}2 + {x2} = 1 ...

limit n-n2{(n+1)(n+1/2)(n+1/22)...(n+1/2n)} n→∞ ...

if Sn be the sum of n consecutive terms of an A.P.show that (Sn+3)-(3Sn+2)+(3Sn+1)-Sn=0 ...

We say x,y,z can be symmetric in an expression..........pls explain wht do we mean by saying so ? To illustrate my doubt, I'm posting one example : Case I : Let x,y,z be real variables which satisfy xy+yz+zx=7 and x+y+z=6 We ...

f(x)=cos(tan x + cot x)cos(tan x - cot x) ...

Which among the following are metamers of molecular formulsA C4 H10 O. 1-- CH3CH2CH2CH2OH 2-- CH3-CH-CH2-CH3 | OH 3-- CH3-CH-CH2-OH | CH3 CH3 | 4-- CH3-C---OH | CH3 5-- CH3-O-CH2CH2CH3 6-- CH3-O-CH-CH3 (Here CH3 is with CH) | ...

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‘O’ is a fixed point and ‘P’ , any point on a given circle ; OP is joined and on it a point ‘Q’ is taken so that OP . OQ = a constant quantity k ; prove that the locus of Q is a circle which becomes a straight lin ...

1.what is the setriochemistry associated with the PINACOLE -PINACOLONE rearrangment for the cylic compound 2. explain why the products obtained are diff. for these two compounds( one is cis form while the other is trans form) ...

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Find the value of cos (Ï€/5) ...

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Q Draw the graph of [x]/{x} from [-3,3] ...

xdy=y(dx+ydy) if y(1)=1 nd y(x)>0 then find y(-2) ...

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