a) Can you use the principle of mathematical induction to find a formula for the sum of the first n terms of a sequence?________________b) Can you use the principle of mathematical induction to determine whether a given formula for the sum of the first n terms of a sequence is correct?________________c) Find a formula for the sum of the first n even positive integers, and prove it using mathematical induction.

9/30/2017 35FE3C8CD36E4EB5A42D8644984077D5.png https://mail.google.com/mail/u/0/#inbox/15ed44902ae5e6e9projector=1 1/1...