2 (x - 1) *(x + 5) ---------------- 3 (x + 1)
((x - 1)^2*(x + 5))/(x + 1)^3
Apply the quotient rule, which is:
and .
To find :
Apply the product rule:
; to find :
Let .
Apply the power rule: goes to
Then, apply the chain rule. Multiply by :
Differentiate term by term:
The derivative of the constant is zero.
Apply the power rule: goes to
The result is:
The result of the chain rule is:
; to find :
Differentiate term by term:
The derivative of the constant is zero.
Apply the power rule: goes to
The result is:
The result is:
To find :
Let .
Apply the power rule: goes to
Then, apply the chain rule. Multiply by :
Differentiate term by term:
The derivative of the constant is zero.
Apply the power rule: goes to
The result is:
The result of the chain rule is:
Now plug in to the quotient rule:
Now simplify:
The answer is:
2 2 (x - 1) + (-2 + 2*x)*(x + 5) 3*(x - 1) *(x + 5) ----------------------------- - ------------------ 3 4 (x + 1) (x + 1)
/ 2 \ | 3*(-1 + x)*(3 + x) 2*(-1 + x) *(5 + x)| 6*|1 - ------------------ + -------------------| | 2 3 | \ (1 + x) (1 + x) / ------------------------------------------------ 2 (1 + x)
/ 2 \ | 5*(-1 + x) *(5 + x) 9*(-1 + x)*(3 + x)| 12*|-4 - ------------------- + ------------------| | 3 2 | \ (1 + x) (1 + x) / -------------------------------------------------- 3 (1 + x)