Answer
$y' = -15t^{-4}-\dfrac{56}{3}x^{-11/3}$
$y'' = 60t^{-5}+\dfrac{616}{9}x^{-11/3}$
$y''' = -300^{-6}-\dfrac{8624}{27}x^{-17/3}$
Work Step by Step
$y' = -15t^{-4}-\dfrac{56}{3}x^{-11/3}$
$y'' = 60t^{-5}+\dfrac{616}{9}x^{-11/3}$
$y''' = -300^{-6}-\dfrac{8624}{27}x^{-17/3}$