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Question: f(x)=(2x-∩)3 +2x - cosx. Then the value of |f'(f-1(x))| at x=∩ is _______? answer: 1/3 I think drawing the graph is only way. Any accurate and easier solution please tell me. (SOURCE: ARIHANT) ...

for the principal value of sin-1(sin5)+cos-1(cos6)+tan-1(tan7)=k-2Ï€ find the integral value of k it is silly b ut its a doubt...... ...

I know this might sound silly But can someone tell me how resistance is extensive? And molar conductivity intensive?? ...

Let x={a1,a2,a3,......,a6} and y={b1,b2,b3}. Then number of functions f from x to y such that it is onto and there are exactly three elements in x such that f(x) =b1, is a) 75 b) 90 c) 100 d) 120 Ans: (d) Please explain how t ...

let [x] denote the greatest integer less than (or) equal to x. If f(x)=[x sin (pi*x)] then f(x) is a) cont. at x=0 b) cont. in (-1,0) c) diffn. at x=1 d) diffn in (-1,1) e) none of these ans: a,b,d ...

The shape of a water clock jar is such that water level. Descends at constant rate at all times.is it falls by x m/s,shape of jar is given by y proportional to x^n find value of n if radius of drain hole is r and can be assum ...

1) If the curves ax2 + 4xy + 2y2 + x + y + 5 = 0 and ax2 + 6xy + 5y2 + 2x + 3y + 8 = 0 intersect at four concyclic points, then the value of |a| is... 2) For 0 < x < pi/2 the solution of \sum_{m=1}^{6}{} cosec {x + (m - ...

Which of these does not associates with a black body : a) It absorbs radiation b) It emits radiation c) It refracts radiation d) It reflects radiation. I don't remember the question correctly. So Excuse for the language. ...

1. A block A of mass m is placed over a plank B of mass 2m. The friction between them is .5 while the ground surface is smooth. The upper block A is imparted a velocity V towards right. The acceleration of B relative to A wil ...

*Image* *Image* The figure shows mass m moves with velocity u. Ring is restricted to move on smooth fixed horizontal rod. Velocity of the ring at that moment? I thought the answer to be u/2 but the correct answer is 2u. This ...

\lim_{n->infinity}(\sum_{r=1}^{m}{r^{n}})^{1/n} is equal to: (n belongs to Natural nos.) a) m b) m/2 c)em d)em/2 Ans: (a) please tell me the method to solve this..... (SOURCE ARIHANT DIFF CALC.) ...

multi correct; in non uniform spherical shell of mass 'm' and radius R (here E is gravitational intensity) which of the following are wrong; (A) E = 0 (r<R) (B) ∫ E.dS = 0 on any closed surface inside the shell (C) E can ...

The reduction potential of two half cell reactions are PbSO4+2e-→Pb+SO42- E°=-0.27V Ag+(aq)+e-→Ag(s) E°=0.75V The feasible reaction will be ...

The vertices of a triangle ABC lies on a rectangular hyperbola such that the orthocentre of the triangle is (3,2) and the asymptotes of the rectangular hyperbola are parallel to the coordinate axis. if the two perpendicular t ...

The oxoanions of which element(in its highest oxidation state) shows least tendency to polymerise? A)B B)Cl C)S D)P doubts : on what factors does tendency to polymerize depend on?? ...

A point object moves on a circular path such that distance covered by it is given by S=t^2/2 +2t meter(t in seconds) .ratio of magnitude of acceleration at t=2 and t=5s is 1:2 .then radius of circle is? Ans 3√51 Please expl ...

in the iodoform reaction of ethanol , the number of moles of base (naoh) consumed per mole of ethanol is? ans: 5 (how?) ...

*Image* Give all products : A - I Src: A boy calling himself a 'chemistry lover' via facebook. ...

a square loop PQRS of side 'L' is placed near an infinite current( i ) carrying wire in the same plane at a distance 'L'. now the loop is rotated about side PS by 90° . find the charge which passes through any point of the l ...

Q. A rod is placed tilted like a ladder is placed having its contact with ground as well as with the perpendicular wall. the rod is making an angle 37° with the horizontal. If the end touching the ground of the rod is being ...

Guys having a problem to find the equation of the line of shortest distance between 2 skew lines. take for an example between ........ x+4/4 = y-2/-2 = z-3/0 and x-5/5 = y-3/3 = z/0 please show the working.......(ans- x/0 = y ...

in a hypothetical atom, potential energy beteen electron and proton at distance 'r' is given by ( -ke2/4r3 ) where k is constant . suppose bohr model is valid and n is principal quatum number , then total energy is proportion ...

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i haven't received the aieee hall ticket till now ....:( the last date given in the web site is 31/3/12 is there any body like me ??? do i have to post a letter to the authorities ? ...

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1)We know that geometrical isomers are exhibited by alkenes and not by alkanes.It is because of the fact that alkanes undergo rotation along the sigma bond.This ability is also responsible for the existence of conformers. But ...

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Give the waveform of an AC Wave which has form factor less than 1 ? ...

If a , b and c are angles in triangle such cot a + cot b + cot c = √3 prove that abc is an equalitial triangle. ...

If the reaction of a mixture of NaCN and benzyl bromide were run in twice the volume of the solvent, the rate of reaction would nearly be : a) same b) twice as fast c) 1/2 as fast d) can't say as the nature of reaction is unk ...