/ ________ \ | / 2 | log\\/ x + 1 - tan(x)/
Let .
The derivative of is .
Then, apply the chain rule. Multiply by :
Differentiate term by term:
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:
The derivative of a constant times a function is the constant times the derivative of the function.
Rewrite the function to be differentiated:
Apply the quotient rule, which is:
and .
To find :
The derivative of sine is cosine:
To find :
The derivative of cosine is negative sine:
Now plug in to the quotient rule:
So, the result is:
The result is:
The result of the chain rule is:
Now simplify:
The answer is:
2 x -1 - tan (x) + ----------- ________ / 2 \/ x + 1 -------------------------- ________ / 2 \/ x + 1 - tan(x)
/ 2 \ | / 2 x \ | | |1 + tan (x) - -----------| | | | ________| | | 2 | / 2 | | | 1 x \ \/ 1 + x / / 2 \ | -|- ----------- + ----------- + ---------------------------- + 2*\1 + tan (x)/*tan(x)| | ________ 3/2 ________ | | / 2 / 2\ / 2 | \ \/ 1 + x \1 + x / \/ 1 + x - tan(x) / --------------------------------------------------------------------------------------- ________ / 2 \/ 1 + x - tan(x)
/ 3 / 2 \\ | / 2 x \ / 2 x \ | 1 x / 2 \ || | 2*|1 + tan (x) - -----------| 3*|1 + tan (x) - -----------|*|- ----------- + ----------- + 2*\1 + tan (x)/*tan(x)|| | | ________| | ________| | ________ 3/2 || | 2 3 | / 2 | | / 2 | | / 2 / 2\ || | / 2 \ 3*x \ \/ 1 + x / 3*x 2 / 2 \ \ \/ 1 + x / \ \/ 1 + x \1 + x / /| -|2*\1 + tan (x)/ - ----------- + ------------------------------ + ----------- + 4*tan (x)*\1 + tan (x)/ + ------------------------------------------------------------------------------------| | 5/2 2 3/2 ________ | | / 2\ / ________ \ / 2\ / 2 | | \1 + x / | / 2 | \1 + x / \/ 1 + x - tan(x) | \ \\/ 1 + x - tan(x)/ / -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- ________ / 2 \/ 1 + x - tan(x)