Suppose you want to generate a table of values from a formula…perhaps to help evaluate a limit. Google Sheets (or any spreadsheet) can quickly generate the values.

# Author: drdave

## What are the Important Parts of a Parabola?

For a parabola of the form

*y* = *ax*^{2} + *bx* +* c*

what are the formulas to find the intercepts and vertex. This example show the key formulas.

## Logarithms and the Compound Interest Formula

You can solve for any constant in the compound interest formula

In an earlier FAQ, we looked at solving for the rate *r*. In the FAQ below, we look at how logarithms can be used to solve for the number of years, *n*, in the power.

## Taking Roots To Solve for the Rate in the Compound Interest Formula

The compound interest formula has several constants in it. If you are given all but one of these constants, you can solve for the remaining constant.

In this FAQ, we look at solving for the rate *r* using roots.