Derivatives from graphs? ?Use the graph of f to sketch a grap ? h of f?.

SOLUTION The objective is to use the graph of f sketch a graph of f . STEP 1 The graph consists of line segments which are the tangent lines. Now to find the slope of the tangent line ,select any 2 points on the line. The slope of a line never changes,so we are free to choose any 2 points. y y Now substitute the points on the equation of slope m = x x1. 2 1 Thus,since it is a tangent line ,the slope of the line is itself the derivative. Now,let the 2 points on the...