Derivative Rules - Math is Fun - Maths Resources
Example: What is the derivative of cos(x)sin(x) ? The Product Rule says: the derivative of fg = f g’ + f’ g In our case: f = cos g = sin We know (from the table above): cos(x) = −sin(x) sin(x) = cos(x) So: the derivative of cos(x)sin(x) = cos(x)cos(x) − s...