-4 ---*(-sin(x)) 5 x
(-4/x^5)*(-sin(x))
Apply the quotient rule, which is:
and .
To find :
The derivative of a constant times a function is the constant times the derivative of the function.
The derivative of sine is cosine:
So, the result is:
To find :
Apply the power rule: goes to
Now plug in to the quotient rule:
Now simplify:
The answer is:
20*sin(x) 4*cos(x)
- --------- + --------
6 5
x x
/ 10*cos(x) 30*sin(x)\
4*|-sin(x) - --------- + ---------|
| x 2 |
\ x /
-----------------------------------
5
x
/ 210*sin(x) 15*sin(x) 90*cos(x)\
4*|-cos(x) - ---------- + --------- + ---------|
| 3 x 2 |
\ x x /
------------------------------------------------
5
x