Let .
Apply the power rule: goes to
Then, apply the chain rule. Multiply by :
Differentiate term by term:
The derivative of a constant times a function is the constant times the derivative of the function.
Apply the power rule: goes to
So, the result is:
The derivative of the constant is zero.
The result is:
The result of the chain rule is:
Now simplify:
The answer is:
4*x ------------- __________ / 2 \/ 4*x + 1
/ 2 \ | 4*x | 4*|1 - --------| | 2| \ 1 + 4*x / ---------------- __________ / 2 \/ 1 + 4*x