Question

y = (x + cos x)sin x

Answer 1

use logrimithmic differentation to solve

Answer 2

' = -sinx sinx + cosx cosx = cos^2x - sin^2x = cos2x. (2) y = -sinx sin^2x + 2cosx sinx cosx = 2sinx cos^2x - sin^3x = sinx (2cos^2x - sin^2x) = sinx (2 - 3sin^2x)

Answer 3

@javikun1

Answer 4

i dont understand whta you did and im not sure if you used logarithmic differentiation