-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