okay, i have made a list of the problems i couldn't do from my textbook. would anyone be able to show complete and easy to understand working out for why the answers are what they are?

differentiate the following:

$\displaystyle y(x) = \frac{16}{25}(x+\frac{1}{x})^3$

$\displaystyle f(x)= \frac{-sinx^2}{\sqrt{x}}$

$\displaystyle f(x)= 4xloge_{e}(3x)$

$\displaystyle f(x)= 3(1-x^2)sin(x)$

any help will be appreciated!