007A Sample Midterm 2, Problem 3

Find the derivatives of the following functions. Do not simplify.

(a)   $f(x)=x^{3}(x^{\frac {4}{3}}-1)$

(b)   $f(x)={\frac {x^{3}+x^{-3}}{1+6x}}$  where  $x>0$

(c)   $f(x)={\sqrt {3x^{2}+5x-7}}$  where  $x>0$

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