5. [10 points each] Recall the special limit im sin((9) {fl>0 6 :1 a) Use this to calculate the exact value ofthe following limit. You must show all your algebraic steps, use correct limit notation, and explain where and how you use the special limit. \"m [ 4x+sin(9x) J: MD 11x+sin(5x) b) Find the exact value of the following limit. Your answer will depend on the unknown constants a, b, c, and 0'. You must show all your algebraic steps, use correct limit notation, and explain where and how you use the special limit. moi3:333]