135 - Mathematics Questions Answers

 

How to do it with calculus?
Asked By: LUFFY
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Joshi sir comment

length for one turn = 3

Draw diagonal of a rectangle then turn it as a cylinder, you will get the construction given in the question.

In triangle l = 32+n2 So total length of wire having n turn = n32+n2 Compare with 20 and solve

 

Can it be solved by finding area ?
Asked By: LUFFY
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Joshi sir comment
Sir pls solve
Asked By: KANDUKURI ASHISH
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Joshi sir comment

The general solution of this kind of  differential eq. is y = eax Let a function g(x) = eaxf(x)    (1) differentiate eq. (1) thrice for getting g,,,(x) now for getting the same function as given  find a. you get the same function for  a = 1/2. clearly, for min 5 zeros of g(x), there are min 2 zeros for g,,,(x).  solve and inform if face any problem.

Plzz help me to solve this question ☺️☺️☺️
Asked By: ASHLOK
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Joshi sir comment

Find 

lim n→∞  ⁿ√(n!) / n

Asked By: LUFFY
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Joshi sir comment
Is there a way to do this in terms of area in a coordinate plane. Where difference of larger and smaller can be difference in x coordinate for 1st player and difference in y coordinate for 2nd player
Asked By: LUFFY
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Joshi sir comment

Probability to get following differences  difference     probability 0                   6/36 1                 10/36 2                   8/36 3                   6/36 4                   4/36 5                   2/36 So required probability =1-2636436+236+1036236 now solve problem is based on integral values so area is not very useful

Find Sum to n terms 

 

x/1-x²  +  x²/1-x⁴  +  x⁴/1-x⁸ + ....

Asked By: LUFFY
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Joshi sir comment

x1-x2=11-x-11-x2 break all terms similarly and solve 

1 . Iₙ = ∫ ( 1/ ( x² + a²)ⁿ  )dx

 

How to do this by substituting x = a tan Α

 

2.  Is this true 

    ∫ f(x) d(kg(x)) = k ∫ f(x) d(g(x))

    where k is a constant

 

Asked By: LUFFY
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Solution by Joshi sir

d/dx((1+x^2+x^4)/(1+x+x^2))=ax+b

then a=?, b=?

Asked By: RAJIV
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Joshi sir comment

1+x2+x4 = (1+x+x2)(1-x+x2)

now solve

Maths >> Calculus >> Functions IIT JEE

Find a formula for a function g(x) satisfying the following conditions

a) domain of g is (-∞ , ∞ )     b) range of g is [-2 , 8]     c)  g has a period π   d)  g(2) = 3

Asked By: VAIBHAV GUPTA
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Joshi sir comment

g(x) = 3-5sin(2x-4)

 

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