User rgrig - Mathematics Stack Exchange

rgrig

Member for 13 years, 4 months
Last seen more than a month ago

rgrig.appspot.com
Canterbury, United Kingdom

11 Answers

Score Activity Newest

18 votes

Learning Lambda Calculus

answered Jul 30, 2010 at 15:07

18 votes

What is your favorite estimation exercise?

answered Jul 30, 2010 at 16:39

16 votes

Explanation of method for showing that $\frac{0}{0}$ is undefined

answered Aug 2, 2010 at 11:38

13 votes

How can I understand and prove the "sum and difference formulas" in trigonometry?

answered Jul 31, 2010 at 11:56

9 votes

Is there a possibility to choose fairly from three items when every choice can only have 2 options

answered Aug 1, 2010 at 21:22

5 votes

Rotate a point in circle about an angle

answered Aug 14, 2010 at 6:50

4 votes

Find taxicab numbers in $O(n)$ time

answered Aug 20, 2010 at 9:26

3 votes

Simple lowpass frequency response

answered Jul 30, 2010 at 13:55

2 votes

Boolean Algebra Proof

answered Aug 13, 2010 at 13:29

1 vote

Is this version of the Hanoi towers problem NP-complete?

answered Jul 31, 2010 at 12:15

1 vote

How to test if a point is inside the convex hull of two circles?

answered Jul 31, 2010 at 13:49