4 / 3\ | ___ | \5*cos(x) + \/ x /
/ 4\ |/ 3\ | d || ___ | | --\\5*cos(x) + \/ x / / dx
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.
The derivative of cosine is negative sine:
So, the result is:
Let .
Apply the power rule: goes to
Then, apply the chain rule. Multiply by :
Apply the power rule: goes to
The result of the chain rule is:
The result is:
The result of the chain rule is:
Now simplify:
The answer is:
3 / 3\ / 3/2\ | ___ | | 6*x | \5*cos(x) + \/ x / *|-20*sin(x) + ------| \ x /
2 / 2 \ / 3/2 \ | / ___\ / 3/2 \ / 3 \| \x + 5*cos(x)/ *|3*\-10*sin(x) + 3*\/ x / - \x + 5*cos(x)/*|- ----- + 20*cos(x)|| | | ___ || \ \ \/ x //
/ 3/2 \ / 3 2 \ |x 5*cos(x)| | / ___\ / 3/2 \ / 3 \ / 3/2 \ / ___\ / 3 \| |---- + --------|*|6*\-10*sin(x) + 3*\/ x / + \x + 5*cos(x)/ *|- ---- + 40*sin(x)| - 9*\x + 5*cos(x)/*\-10*sin(x) + 3*\/ x /*|- ----- + 20*cos(x)|| \ 2 2 / | | 3/2 | | ___ || \ \ x / \ \/ x //