Definition of Derivative Tool small version
Input a function for f(x) into the input box. If you wish to find f'(a), then select, (a, f(a)) as your fixed point, where a is a number visible in the viewing window. Drag the moving point as close to the fixed point as possible, and have students use these values to calculate the slope and to set up the limit expression to find the value of the derivative at this value of a.