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*Image* This type's been hauntin me ......... I know its sumthiing to do wid ∫ pl. help ...

i find it hard to these questions........... so plz help 1) (2cos40 -cos20)/sin20 2) tan10-tan50+tan70 ...

Hi,iam facing a problem in determining when the work done by the friction is positive ,zero and when it is negative.Please help ...

let the fn f satisfy f(x).f'(-x)=f(-x)f'(x) for all x n f(o)=3 q1the value f(x)f(-x) for all x is a]4 b]9 c]12 d]16 q2 ∫dx/(3+f(x))[limit -51 to 51] a)17 b)34 c)102 d)0 q3 no of roots of f(x)=0 in[-2,2] a1 b0 c2 d4 ...

When the voltage applied to an X-ray tube is increased from V1 = 40 kV to 200 kV the wavelength interval between the Kα line and the short-wave cut off frequency of the continuous X-ray spectrum increases by a factorξ = 2. ...

\text{For x} >0,lim_{x\to 0}\left(\left(sinx\right)^{\frac{1}{x}}+\left(\frac{1}{x}\right)^{sinx}\right) \ is ...

as advised by nishant bhaiya in the post [url]http://targetiit.com/iit_jee_forum/posts/help_me_out_3493.html[\url] i m starting this thread in which i want the seniors to post about the books they want to sell , for that, plz ...

someone plz help me recollect how to do this damn sum. I've totally forgotten how to do it 1.Find the minor axis of: 2x2-2xy+4y2-(3+√2)=0 ...

a metal sphere is suspended from a nylon thread.initially sphere is unharged.when a positively charged glass ro is brought close,sphere is drawn towards rod,if it touches rod,it suddenly flies away.explain. i think reason is ...

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draw the velocity- time graph of the particle moving with a constant retardation , and its initial velocity is zero ...

A vehicle of mass 'm' takes a turn of radius 'r' on a surface with friction coefficient 'μ'. The mass of vehicle is uniformly distributed so that it is at a height 'H' from the surface and at an equal distance 'a' from both ...

4) Dry bleach is done by A. O 3 B. Cl2 C. H 2O2 D. SO 2 ...

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ƒ : R → R is a twice diffentiable fn. such that ƒ'(x) = ƒ(1-x) for all x \epsilon R Given ƒ(0) = 1 , Find ƒ(1) (A) e - 2 (B) ln 2 - 1 (C) sec 1 + tan 1 (D) cos 1 + sin 1 ...

1.. A bicycle is riding down a rough inclined plane with a uniform velocity with the rider applying brakes on only the rear wheels. Giv the direction of friction on both the front and the back wheels. 2.. A man of mass 50kg s ...

*Image* THE answer is *Image* someone please explain ...

*Image* a convergent beam is incident on two slabs placed in contact as shown .in fig where will the rays finally converge? sum 1 pl answer yaar ...

How many distinct ordered pairs (x,y) exist where x and y are positive integers and satisfy xy = 72(x+y) ? ...

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http://home.comcast.net/~wolfand/ ^^^ Visit this website That's the best website for preparation......even better than TargetIIT!!! Enjoy ur time! PS and pls post ur "kind" comments in my chatbox only http://targetiit.com/cha ...

sin x + cos x = 1/2 x ε 0, π find tan x ...

I feel iam weak in solving am-gm inequalities plz post some questions or d links in this website wer i could find question note:upto jee level only ...

Find the value of n such that an+1+bn+1/an+bn may be geometric mean between a and b . ...

*Image* SOLUTION ahead *Image* Can Sum1 pl. write the Statements for the proof that is why did they apply SUCH Conditions for each of the cases ??? [7] ...

If the first and the nth term of a G.p are a and b,respectively ,and if P is the priduct of n terms,prove that P2=(ab)n. ...

*Image* Arrange in order of basic strength ...

If a,b,c,d are in G.p then show that (a2+b2+c2) (b2+c2+d2)=(ab+bc+cd)2 ...

tank circuit ................................................................................ Let me see if u can calculate this.. What is the total impedence of a tank circuit . ...