### Home > A2C > Chapter 12 > Lesson 12.1.2 > Problem 12-35

12-35.

Consider the series

Write an expression for the

^{th}term.Use a system of equations or look at the difference between terms and the value of the first term.

How many terms are in the series? How can you tell?

Set the equation you found in part (a) equal to

and solve for .What is the sum of this series?

Use the rectangle method or Antonio's method.