asinx+b, if x5 21: 4. Consider 90) = {x2 _ x + 2 if x > 21? A. Find the values of a and D such that g(x) is a differentiable function (12 points). B. Write the equation of the tangent line to g(x) at x = 221'. (9 points) C. Use the tangent line equation from part B to write an approximation for the value of 9(6). Do not simplify. (6 points)