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Catalogs Discussion Forums -> Differential Calculus -> should i buy i a maron for calculus or not. -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
6 replies   

I think u shud do ARIHANT DIFFERENTIAL CALCULUS, it is good for present day level of JEE

Catalogs Discussion Forums -> Differential Calculus -> Limits Problem -> Go to message
This Post 7 points    (Olaaa!! Perrrfect answer.   in 2 votes )   [?]
6 replies   

Just Apply the L-Hospital rule twice


  by applying it once, u get


 Limx-> 0( - (m+2) sin(m+2)x  + msinx)/ (- (m+4)sin(m+4)x + (m+2) sin(m+2)x )


again applying L-Hospital,


Limx-> 0(-(m+2)2cos(m+2)x + m2cosmx )/ ( -(m+4)2cos(m+4)x + (m+2)2cos(m+2)x)


Putting limits, we get


(m2 - (m+2)2)/( (m+2)2 - (m+4)2 )


=>  (m+1)/ ( m+3)


Rate me..........

Catalogs Discussion Forums -> Non IIT Institutes -> Heres my problem....... -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
2 replies   

wats ur problem.....................

Catalogs Discussion Forums -> Algebra -> WHICH IS LARGER? -> Go to message
This Post 5 points    (Olaaa!! Perrrfect answer.   in 1 votes )   [?]
7 replies   

 (99)100 > (100)99


Because,


(100)99 = (99+1)99


= 99C0 (99)99 + 99C1(99)98 + ....................... + 1


= (99)99 + (99).(99)98 +............... + 1


= 2.(99)99 + terms relatively much smaller terms


and this is much smaller than 99.(99)99 i.e (99)100


 

Catalogs Discussion Forums -> About IITs and JEE -> i have 35 score in iit jee 2008. i am a sc candidate. can i get any rank in jee -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
13 replies   

You willl top JEE


 

Catalogs Discussion Forums -> Algebra -> Help me......rates assured... -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
7 replies   

is it 29 i.e 512....................

Catalogs Discussion Forums -> Non IIT Institutes -> Can u plz tell what are the total marks for bitsat exam? How much is it out of? -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
1 replies   

In BITSAT there are 150 ques. P-40, C-40, M-45, Eng& logical-25,


Each ques is of three marks


but if u attempt all ( without leaving any), you will be given 12 additional ques. if time permits,


means u can score even 486 out of 450, 36 are bonus..........

Catalogs Discussion Forums -> Differential Calculus -> solve this -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
4 replies   

In this


f(x) = 1+ 2x2 + 22x4 +.................... + 210x20


f1(x) = 4x + 4.22x3 +................+ 20.210x19


       = x(4 +4.22x2 + ...............+ 20.210x19)


for f1(x)=0


either x=0


or


4 + 4.22x2 +.................. + 20.210x19 =0,


This equation has all terms with even powers of x and also all coff. are positive, thats why it has all imaginary roots.


therefore, there is only one val x=0 for which there may be max or min,


Now, at x=0 F2(x)= 4,


that's why there is only one minima..........

Catalogs Discussion Forums -> Integral Calculus -> Solve and please reply soon -> Go to message
This Post 12 points    (Olaaa!! Perrrfect answer.   in 3 votes )   [?]
3 replies   
Solution is simple:
e2x-3ydx + e2y-3x dy =0
(e2xdx)/(e3y) = - (e2ydy)/(e3x)
 
 
e5xdx= - e5ydy
integrating both sides, we get
e5x/5 + e5y/5 = K
(k is any constant)
or simply
e5x + e5y = C
(C=5K)
 
Catalogs Discussion Forums -> Thermal Physics -> theory of gases -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
3 replies   
Total Energy (U)
U=(nf/2)*RT
f for polyatomic ideal gas at room temp. is 6
i.e.
U=3nRT.
Where R is universal gas constant.
T is the temp.
n is no. of moles of that gas.
At higher temp, f=8
Community shelf Community shelf -> Inductive effect -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
2 replies   
gud work,
thanx
Catalogs Discussion Forums -> Differential Calculus -> Please solve it. -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
2 replies   
f(x)= (2x-)3 - cosx +2x,
g(x)= f-1(x)
 
Find d/dx (g(x)) 
Catalogs Discussion Forums -> Vectors -> I FIND VECTORS DIFFICULT.SUGGEST TO ME AS TO HOW TO GO AB'T? -> Go to message
This Post 2 points    (Olaaa!! Perrrfect answer.   in 1 votes )   [?]
3 replies   
Just try to grasp the concept visually, Vectors need clear understanding, For the beginning you can do it from any elementary book, then try Arihant or TMH.
 
I hope this will surely help you.
Catalogs Discussion Forums -> Differential Calculus -> Differentiation -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
1 replies   
Let f(x) be differentiable function x  R. then which is true:
 
a) d2y/ dx2   _ (dx/dy)3 = 0
b) d2y/dx2 + (dy/dx)3.d2x/dy2 = 0
c) d2y/dx2  (dy/dx)3 = 0
d) None of these.
Catalogs Discussion Forums -> Electricity -> work prob -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
3 replies   
Particle of charge q is brought from A to B, following the path as a sinusoidal function, and then find the work done in doing so? The point ?A?, is ?r?, distance from the infinitely long linear body having Q charge uniformly distributed on it
Write with the correct explanation for the answer.


 
 
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