Often a rate function or derivative is given by data or a graph. If we can find a function for the data, we can take the antiderivative of the function to undo the rate. But what if the rate is given by a graph whose formula is unknown?
The Future Value Of An Annuity in Google Sheets
The future value of either an ordinary annuity or an annuity due may be calculated in Google Sheets. The Sheets command FV helps you to do this.
How Do You Find Compound Interest Future Value In Google Sheets?
Google Sheets contains several powerful commands for calculating compound interest. This MathFAQ demonstrates how to compute future value using compound interest.
Death and Piecewise Linear Functions
Although this may seem a little gruesome, it is not uncommon for businesses to give discounts for volume sales. In this case, a mortician charges less per pound for bodies weighing more than a certain amount.
The local mortician charges by the pound for embalming according to the following table:
Find a piecewise linear function that models the cost as a function of weight.
Use a Blog to Help Teach Your Math Class (Part 5)
In Part 3 of this series, I demonstrated how easy it is to upload an image file to WordPress. For a mathematics teacher like myself, most of these images files are images of equations or graphs. In this post I want to go into more detail on how I capture these images using a screen capture utility called Snagit produced by Techsmith. Although there are many screen capture apps out there, Snagit is my favorite even though it is not free.
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