sin(7*x - 5)*log(4*x + 5)
sin(7*x - 5)*log(4*x + 5)
Apply the product rule:
; to find :
Let .
The derivative of sine is cosine:
Then, apply the chain rule. Multiply by :
Differentiate term by term:
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:
The derivative of the constant is zero.
The result is:
The result of the chain rule is:
; to find :
Let .
The derivative of is .
Then, apply the chain rule. Multiply by :
Differentiate term by term:
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:
The derivative of the constant is zero.
The result is:
The result of the chain rule is:
The result is:
Now simplify:
The answer is:
4*sin(7*x - 5) -------------- + 7*cos(7*x - 5)*log(4*x + 5) 4*x + 5
16*sin(-5 + 7*x) 56*cos(-5 + 7*x) -49*log(5 + 4*x)*sin(-5 + 7*x) - ---------------- + ---------------- 2 5 + 4*x (5 + 4*x)
588*sin(-5 + 7*x) 336*cos(-5 + 7*x) 128*sin(-5 + 7*x) - ----------------- - 343*cos(-5 + 7*x)*log(5 + 4*x) - ----------------- + ----------------- 5 + 4*x 2 3 (5 + 4*x) (5 + 4*x)