4*(sin(t) - t*cos(t))
4*(sin(t) - t*cos(t))
The derivative of a constant times a function is the constant times the derivative of the function.
Differentiate term by term:
The derivative of sine is cosine:
The derivative of a constant times a function is the constant times the derivative of the function.
Apply the product rule:
; to find :
Apply the power rule: goes to
; to find :
The derivative of cosine is negative sine:
The result is:
So, the result is:
The result is:
So, the result is:
The answer is:
4*(t*cos(t) + sin(t))