### Home > A2C > Chapter 12 > Lesson 12.3.1 > Problem 12-137

12-137.

Verify that it is true for *n* = 1.

5 = 5

Assume that the identity is true for some arbitrary number *k*.

Prove that given the above assumption, the identity holds true for (*k* + 1).

12-137.

Verify that it is true for *n* = 1.

5 = 5

Assume that the identity is true for some arbitrary number *k*.

Prove that given the above assumption, the identity holds true for (*k* + 1).