___ 10 \/ x *(1 - x) --------------- x + 1
/ ___ 10\ d |\/ x *(1 - x) | --|---------------| dx\ x + 1 /
Apply the quotient rule, which is:
and .
To find :
Apply the product rule:
; to find :
Apply the power rule: goes to
; 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.
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 result is:
The result of the chain rule is:
The result is:
To find :
Differentiate term by term:
The derivative of the constant is zero.
Apply the power rule: goes to
The result is:
Now plug in to the quotient rule:
Now simplify:
The answer is:
10 ___ 10 ___ 9 (1 - x) \/ x *(1 - x) 10*\/ x *(1 - x) --------------- - --------------- - ----------------- ___ 2 x + 1 2*\/ x *(x + 1) (x + 1)
/ 2 2 ___ ___ 2\ 8 | ___ 10*(-1 + x) (-1 + x) (-1 + x) 20*\/ x *(-1 + x) 2*\/ x *(-1 + x) | (-1 + x) *|90*\/ x + ----------- - --------- - ------------- - ----------------- + -----------------| | ___ 3/2 ___ 1 + x 2 | \ \/ x 4*x \/ x *(1 + x) (1 + x) / ------------------------------------------------------------------------------------------------------ 1 + x
/ 2 3 3 ___ 2 ___ 3 ___ 2 3 \ 7 | ___ 45*(-1 + x) 5*(-1 + x) (-1 + x) (-1 + x) 90*\/ x *(-1 + x) 10*(-1 + x) 2*\/ x *(-1 + x) 20*\/ x *(-1 + x) (-1 + x) | 3*(-1 + x) *|240*\/ x + ----------- - ----------- + --------- + -------------- - ----------------- - ------------- - ----------------- + ------------------ + --------------| | ___ 3/2 5/2 ___ 2 1 + x ___ 3 2 3/2 | \ \/ x 2*x 8*x \/ x *(1 + x) \/ x *(1 + x) (1 + x) (1 + x) 4*x *(1 + x)/ ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 1 + x