Question

Let f(x) = -7 x^{4} sqrt{x} + ({2}/ {x^{3} sqrt{x} }).
find f'( x )

Answer 1

\[ f(x) = -7 x^{4}\sqrt{x} + (\frac{2}{ x^{3} \sqrt{x}})\] like that?

Answer 2

Yes

Answer 3

rewrite as
\[-7x^{\frac{9}{2}}+2x^{-\frac{7}{2}}\] and use the power rule twice

Answer 4

Like this @satellite73