tan(x) + cot(x)
d --(tan(x) + cot(x)) dx
Differentiate term by term:
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:
There are multiple ways to do this derivative.
Rewrite the function to be differentiated:
Let .
Apply the power rule: goes to
Then, apply the chain rule. Multiply by :
The result of the chain rule is:
Rewrite the function to be differentiated:
Apply the quotient rule, which is:
and .
To find :
The derivative of cosine is negative sine:
To find :
The derivative of sine is cosine:
Now plug in to the quotient rule:
The result is:
Now simplify:
The answer is:
2 2 tan (x) - cot (x)
// 2 \ / 2 \ \ 2*\\1 + cot (x)/*cot(x) + \1 + tan (x)/*tan(x)/
/ 2 2 \ |/ 2 \ / 2 \ 2 / 2 \ 2 / 2 \| 2*\\1 + tan (x)/ - \1 + cot (x)/ - 2*cot (x)*\1 + cot (x)/ + 2*tan (x)*\1 + tan (x)//