# February 2016

As I hope you’ve noticed there is a new pull-down on the navigation bar called “Website.” For some years I’ve had a website at linmcmullin.net that lately I’ve been neglecting. I decided to close it in the next few days, and therefore, I move most of the material that is there to this new tab. The…

A very short post today. Audrey Weeks, author of Calculus in Motion, sent me this link to a BBC article by Melissa Hogenboom discussing the 10 most beautiful equations. Each equation can be clicked for more details and some of the links even have videos discussing the equation. Click here for You decide: What is the most beautiful equation? After reading…

# Good Question 8 – or not?

Today’s question is not a good questions. It’s a bad question. But sometimes a bad question can become a good one. This one leads first to a discussion of units, then to all sorts of calculus. Here’s the question a teacher sent me this week taken from his textbook: The normal monthly rainfall at the…

# January 2016

HAPPY NEW YEAR – a few more days off and then back to school! If you haven’t already, it is time to start integration. The posts on starting integration were listed in December since I try to stay ahead of things so you’ll have time to prepare. With that in mind here are past posts…

# When are we ever …

The following answer to a question we’ve all been asked was posted yesterday on a private Facebook page for AP Calculus readers. The author, Allen Wolmer is a teacher and AP Calculus reader. He teaches at Yeshiva Atlanta High School, in Atlanta, Georgia. I reprint it here with his kind permission. Thank you Allen.     A…

# Determining the Indeterminate

The other day someone asked me a question about the implicit relation . They had been asked to find where the tangent line to this relation is vertical. They began by finding the derivative using implicit differentiation: The derivative will be undefined when its denominator is zero. Substituting y = 0 this into the original…

# December 2015

Here are the past posts for December. The topics are those leading to integration and the Fundamental Theorem of Calculus. The four featured post below are the most popular December posts from past years. I hope you all have a happy holiday season as you get ready for the New Year. November 18, 2012 Antidifferentiation…