EM a. Use limits to nd the derivative function f' for the function f. b. Evaluate f'(a) for the given values of a. 3 1 a= ,6 f(>t2 + 120t. a. For s(t), find the instantaneous velocity function v(t}. (Recall that the velocity function v is the derivative of the position function 5.) b. Determine the instantaneous velocity of the projectile at t = 2 and t= 3 seconds. gm a. Find the derivative function f' for the function f. b. Find an equation of the line tangent to the graph of f at (a,f(a)) for the given value of a. f(x)=2x2-9x+10,a=1