Please answer the following questions.

x2, for x = 1 4. Let f (x) = 1 2x + 1, for x> 1 If f continuous at x = 1 ? If so, explain your answer. If not explain why not and specify the type of discontinuity (removable, jump, infinite). Cos(x) at the point 5. Find an equation of the tangent line to the curve y - 2+ sin(x) ( 0 , z )