Try another version of this question Find `dy/dx` for `y=20x-11cosx`. `d/dx(20x-11cosx)=`
Get help: Box 1: Enter your answer as an expression. Example: 3x^2+1, x/5, (a+b)/c
To find the derivative `dy/dx` of the function `y=20x-11cosx`, apply the basic rules of differentiation to each term separately. For the linear term `20 x`, the derivative is simply the coefficient `20`. For the trigonometric term `-11 cos x`, use the derivative of cosine, remembering to include the chain rule for the coefficient `-11`.
Be sure your variables match those in the question `20+11 sin x`