___ 1
\/ 1 + tan(x) + -
x
sqrt(1) + tan(x) + 1/x
Differentiate term by term:
Differentiate term by term:
The derivative of the constant is zero.
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:
The result is:
Apply the power rule: goes to
The result is:
Now simplify:
The answer is:
2 1
1 + tan (x) - --
2
x
/1 / 2 \ \ 2*|-- + \1 + tan (x)/*tan(x)| | 3 | \x /
/ 2 \ |/ 2 \ 3 2 / 2 \| 2*|\1 + tan (x)/ - -- + 2*tan (x)*\1 + tan (x)/| | 4 | \ x /