# 14 - Functions Questions Answers

best calculus books for iitjee.

**Asked By: KRISHN RAJ**7 year ago

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**Answer Strategies and trick by Manish sir**(it will help you to solve it by yourself)

its I. E. Maron

take 1,1,1,1,1,1 to make sum of the value as 37..

clue: use any operations between the numbers.

**Asked By: M.SAKTHIVEL**7 year ago

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DOMAIN OF log (X+4) base of log is 2

**Asked By: GAURAV SHARMA**7 year ago

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Let f(x) be a real valued function not identically equal to zero such that f(x+y^{n})=f(x)+(f(y))^{n}; y is real, n is odd and n >1 and f'(0) ³ 0. Find out the value of f '(10) and f(5).

**Asked By: KAMAL**7 year ago

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**Answer Strategies and trick by Manish sir**(it will help you to solve it by yourself)

take x = 0 and y = 0 and n = 3

we get f(0) = f(0) + f(0)^{n} or f(0) = 0

now take x = 0, y = 1 and n = 3

so f(1) = f(0) + f(1)^{3}

so get f(1) = 1, other values are not excetable because f(x) be a real valued function not identically equal to zero and f'(0) ³ 0

similarly get the other values

you will get f(5) = 5

so f(x) = x generally then find f ^{' }(x) , i think it will be 1