13-6

This week we finished up learning chapter 13 before the holidays. This is the last chapter we are learning before our midterm. For the next weeks, we will be taking a chapter test and preparing for the midterm exam that we are all hoping to be exempt from. The most recent section we learned is 13 – 6. It was pretty simple, but pretty hard to do on the computer, so I will do my best.

For this section a “sigma” is drawn for every problem. A sigma looks sort of like an E. A sigma is a series written in a condensed form.

At the top of the sigma, there is a number called the limits of summation.
At the bottom, there is a letter that equals a number. Ex. K=4 The k would be the index and the number is another limits of summation.
And in the middle there is an equation called the summand.

To complete problems in this chapter all you have to do is follow directions. If it asks for a particular piece of the sigma, you just find it. If it asks you to evaluate, you expand the sigma and solve it. If it tells you to expand, you just expand and stop there. It is pretty simple, but without me being able to draw a sigma on the computer, it would be difficult for me to work any problems.