Please help me with this question

Evaluate the following limits and explain the meaning of the limit terms of the instantaneous rate of change of a function. 1 l , 1/1+h 11m hm h Find all values of x at which f(x) is discontinuous. What type of discontinuity does f(x) have? List all that applies. 4:: + 1 f ('1') = (42: + 1) (113: 3)