Let .
Apply the power rule: goes to
Then, apply the chain rule. Multiply by :
Differentiate term by term:
Apply the power rule: goes to
The derivative of the constant is zero.
The result is:
The result of the chain rule is:
Now simplify:
The answer is:
3 2 / 4\ / 4\ 20*x *\1 + x / *\3 + 19*x /
2 / 2 \ / 4\ |/ 4\ 8 4 / 4\| 120*x*\1 + x / *\\1 + x / + 32*x + 24*x *\1 + x //