- #1

adjacent

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## Homework Statement

A function ##f##, defined for ##x \in \mathbb{R}, x > 0## is such that:

##f'(x)=x^2-2+\frac{1}{x^2}##

**a**Find the value of ##f''(x)## at ##x=4##

**b**Given that ##f(3)=0## find ##f(x)##

## Homework Equations

## The Attempt at a Solution

a [/B]

##f''(x) = 2x-2x^{-3}##

##f''(4)=2(4)-2(4^{-3})=\frac{225}{32}##

**b**

I haven't studied integration yet. So I have no idea how to do this....How am I supposed to do this?