Answer
$\Delta y= -0.322$
$dy= -0.32$
Work Step by Step
$\Delta y=f(x+\Delta x)-f(x)=$
$ f(2+0.01)-f(2)=$$ (2-2.01^{4})-(2-2^{4})=$$-14.322-(-14)= -0.322$
$dy=( \frac{dy}{dx})\Delta x=-4x^{3}\times\Delta x=$$ -4\times2^{3}\times0.01= -0.32$