1. Suppose f (x) = 2x x+2 (a) (4 pts) Use the definition of derivative to find the slope of the tangent line to the curve at x = 2. (b) (2 pts) Find an equation of the tangent line to the curve at x = 2.Use the given graph to estimate the value of each derivative. {b} 1"{1} {E} 1'11} H {d} 1"{3} H {E} 1'14} U {f} \"15} Ex