Apply the quotient rule, which is:
and .
To find :
The derivative of sine is cosine:
To find :
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:
Now plug in to the quotient rule:
Now simplify:
The answer is:
1 sin(x)
---*cos(x) - ------
5*x 2
5*x
2*cos(x) 2*sin(x)
-sin(x) - -------- + --------
x 2
x
-----------------------------
5*x
6*sin(x) 3*sin(x) 6*cos(x)
-cos(x) - -------- + -------- + --------
3 x 2
x x
----------------------------------------
5*x