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Find dydx for y=20x+13cosx.
ddx(20x+13cosx)=
To find the derivative dydx of the function y=20x+13cosx, apply the basic rules of differentiation to each term separately. For the linear term 20x, the derivative is simply the coefficient 20. For the trigonometric term 13cosx, use the derivative of cosine, remembering to include the chain rule for the coefficient 13.
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Box 1: Enter your answer as an expression. Example: 3x^2+1, x/5, (a+b)/c
Be sure your variables match those in the question
20-13sinx