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.
For a parabola of the form
y = ax2 + bx + c
what are the formulas to find the intercepts and vertex. This example show the key formulas.
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.
As George found out in an episode of Seinfeld, sometimes you need to do the opposite.