Mathematics
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graydad
  • Member for 8 years, 8 months
  • Last seen more than a month ago
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About

A retired mathematician that has become a software developer. I still have a soft spot for mathematics.

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View all questions and answers
All Questions Answers
Score Newest
answer
34
What's wrong with l'Hopital's rule?
May 17, 2015
answer
29
What is an example of function $f: \Bbb{N} \to \Bbb{Z}$ that is a bijection?
Oct 9, 2014
answer
19
Why/How does this sqrt term work? The inverse of a fraction in a sqrt
Mar 25, 2015
answer
17
Easy math proofs or visual examples to make high school students enthusiastic about math
Jun 24, 2015
answer
13
Proof: The identity matrix is invertible and the inverse of the identity is the identity
Feb 23, 2015
answer
12
Chain rule with triple composition
Nov 14, 2014
answer
12
How do I determine if a set is open or closed??
Feb 20, 2015
answer
11
What to answer when people ask what I do in mathematics
Feb 8, 2015
answer
11
Doubt about the domain in logarithmic functions.
May 26, 2015
answer
10
The coefficient of $x^9$ in the expansion of $(1+x)(1+x^2)(1+x^3)\cdots(1+x^{100})?$
Oct 11, 2015

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