Derivative, how to get the derivative of a root? example: √5x-6

How to find the derivative of a root? Use the rule to differentiate the following example, first simplifying the root and writing it as a fraction using the notation. Move 7/6 forward then decrease the power by 1. Use the definition of a derivative to differentiate f (x) = x^-1 = 1/x. First simplify the numerator then simplify and cancel as much as possible.