Vishal U. Karve   Vishal U. Karve is offline Vishal U. Karve's messages in the community
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Catalogs Discussion Forums -> Trignometry -> Trigo -> Go to message
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Whenever i am asked any question regarding min/max value of expressions involving triangles, i put equilateral triangle condition....works 99.99% of the times...

Catalogs Discussion Forums -> Trignometry -> Trigo -> Go to message
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Catalogs Discussion Forums -> Algebra -> algebra -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

The point  (-11,8)

Catalogs Discussion Forums -> Integral Calculus -> Integration -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

Catalogs Discussion Forums -> Algebra -> p n c -> Go to message
This Post 5 points    (Olaaa!! Perrrfect answer.   in 1 votes )   [?]

Total no of ways are 7!.

In each of these ways, there is a particular order for A,B,C.

Six such orders are possible-

ABC,ACB,BAC,BCA,CAB,CBA.

We want ABC order to appear which will be one-sixth of the total ways.

So the answer will be 7!/6 = 840.

Catalogs Discussion Forums -> Algebra -> How to make it perfect square....????? Eqn. is ----- x^2+1+1/x^2 -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

It is

Catalogs Discussion Forums -> Thermal Physics -> Thermodynamics -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

Work done

= 2*R*(300) / (1/2)

= 1200 R

Catalogs Discussion Forums -> Algebra -> Permutation -> Go to message
This Post 10 points    (Olaaa!! Perrrfect answer.   in 2 votes )   [?]

1.

3C2*2!*3!=36

2.

5! - 3!.3! = 120 - 36 = 84

Catalogs Discussion Forums -> Mechanics -> how to decide direction of friction in backward forward in pure rolling -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

Assume that the friction is acting in a particular direction..say forward.

Write the equations for

net force=mass*acceleration

and

net torque=moment of inertia * angular acceleration

Put condition for pure rolling.

If friction comes out to be negative, then the direction you have assumed in the first step is opposite to the direction of friction.

If friction comes out to be positive, then the direction you have assumed in the first step is the direction of friction.

Catalogs Discussion Forums -> Organic Chemistry -> very ifficult -> Go to message
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On a serious note, make a time table for the month and stick to it. You can plan to finish alkanes in 3 hours and then take a self test...then alkenes or a part of it in next 3 hours.... make a timetable for the whole month to see how much you can finish.

Even if you don't finish everything just make sure whatever you have finished studying is perfectly there in your head.

Good luck!


Catalogs Discussion Forums -> Organic Chemistry -> very ifficult -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

(a) through a miracle

(b) by assuming that you're Rajnikanth

(c) Lindlar, Stephen, Claisen, Gattermann, Koch and all those great scientists come and teach you in your dreams

(d) All of these...

Catalogs Discussion Forums -> Magnetism -> Charge is placed in time varying magnetic field.... -> Go to message
This Post 5 points    (Olaaa!! Perrrfect answer.   in 1 votes )   [?]

The answer is BC...i think my reasoning is correct..

 

Catalogs Discussion Forums -> Integral Calculus -> Integration of tan -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

Better see :

http://integrals.wolfram.com/index.jsp?expr=x+tan+x&random=false

Catalogs Discussion Forums -> Integral Calculus -> Integration of tan -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

See:

http://malaysia.answers.yahoo.com/question/index?qid=20100125030601AA3vO51

Catalogs Discussion Forums -> Integral Calculus -> Integration of tan -> Go to message
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Put x=tan t , dx=sec2t dt,

You'll get integral t2.sec2t dt

Take t2 as first function and integrate by parts

you'll get an integral 2t.tan t dt

It does not exist in terms of elementary functions.

It contains Polylogarithms.

Catalogs Discussion Forums -> Algebra -> Polynomial Expansion -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

Hey I saw the solution to this question...but everyone is welcome to try it. It is a very good question..

Catalogs Discussion Forums -> Integral Calculus -> y=sinx -x find inetgral(-pie to pie)f inverse x -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

Plz revise your notes...cos x is even and so is its inverse.

Catalogs Discussion Forums -> Differential Calculus -> Periodic function -> Go to message
This Post 5 points    (Olaaa!! Perrrfect answer.   in 1 votes )   [?]

Since it has period pi/2, use g(x)=g(x+pi/2)

u'll get a=a2

a cannot be zero..a=1

Catalogs Discussion Forums -> Modern Physics -> bohrs theory -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

It tells us that electrons can revolve arond the nucleus in some specified energy states where its angular momentum is an integral multiple of

.

Catalogs Discussion Forums -> Magnetism -> Charge is placed in time varying magnetic field.... -> Go to message
This Post 5 points    (Olaaa!! Perrrfect answer.   in 1 votes )   [?]

Time varying magneric field produces electric field, right? And electric force causes charges to move...and moving charges experience magnetic force.....I don't know if i'm right..

 
 
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