need typed solution

3) (20 pts.-4 pts. each) Complete each part of the proof by mathematical induction of the following statement: For all positive integers n, IM 1 n i(i + 1) n+ 1 a. Basis step: State what must be proved and then prove it. b. Inductive hypothesis: State what is assumed in the inductive part of the proof. C. Inductive step: State what must be proved in the inductive step. d. Prove the inductive step. e. Conclusion: State the final conclusion that is true when both the basis and inductive parts of the proof are shown to be true