The Joys of Teaching Math
Sent along by a colleague:
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- Andrew Samwick
- I am a professor of economics and Director of the Nelson A. Rockefeller Center at Dartmouth College in Hanover, New Hampshire. This blog reflects my personal opinions about topics in economics, politics, and current events. They do not necessarily reflect the opinions of any institution with which I am affiliated.
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5 comment(s):
If she agreed, she was mastered Fuzzy Math!
You should ask your colleague Jon Skinner about the quadratic equation and his 15 minutes of fame (infamy?) as the butt of some criticism in Spy magazine. Of course, he was correct.
This would be much funnier if the first equation were actually valid. Think back to calculus--the first statement is only true if we put a "+" superscript on the "8" under the "LIM". In other words, the right-hand limit is infinity, but the left-hand limit is negative infinity. Because the left-hand and right-hand limits are unequal, the statement is not valid.
Yes, much funnier.
Thanks for the correction.
At least to math geeks like us, eh?
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