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Separate the intervals of concavity of t...

Separate the intervals of concavity of the following functions
(i) f(x)=`sin^(-1)x`,(ii) f(x)=x+sinx

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To determine the intervals of concavity for the given functions, we will follow these steps: ### (i) For the function \( f(x) = \sin^{-1}(x) \) 1. **First Derivative**: We start by finding the first derivative of the function. \[ f'(x) = \frac{1}{\sqrt{1 - x^2}} ...
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