1,604 reputation
514
bio website None
location Boston, MA
age 64
visits member for 2 years, 1 month
seen 21 hours ago

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21h
comment Existence of a prime in an interval that is not a linear combination of two specified primes?
Am I missing something? Since $(p,q) = 1$, any integer is a linear combination of $p$ and $q$.
21h
answered Struggling with proof, by contrapositive?
Apr
19
answered $\tan(x)=\cot(90^\circ-x)$??
Apr
17
comment Permutations of two photo frames
Yes, that's right.
Apr
17
answered Permutations of two photo frames
Apr
17
answered Determining if $Z$ is injective or surjective. Help starting a proof
Apr
17
answered Prove that this sequence converges
Apr
15
answered Proving a partial sum with induction
Apr
15
comment Find what percent X is between two numbers?
In what way is 45 50% of the way from 10 to 100? I would have thought the answer would be 55. Your other examples don't make sense to me either. Perhaps you can explain again more precisely what you are looking for. And if you do, I suspect that may help you figure out what the algorithm you are looking for is.
Apr
6
comment What does it mean when a system of linear equations have no solution?
Because you performed the elementary operation of adding a multiple of one row to another row. That does not change the determinant of a matrix.
Apr
6
answered What does it mean when a system of linear equations have no solution?
Apr
5
comment Why $\cos(-\theta)$ gives positive values while in case of sine it is negative?
You should also look at the first answer to this question.
Apr
5
comment to show one to one function
What do you know about the shape of quadratic curves?
Apr
5
comment can someone help me understand how to solve linear diophantine equations
See the section on Bezout's identity here.
Apr
4
awarded  Scholar
Apr
4
accepted Looking for mathematics teaching article
Apr
4
comment Looking for mathematics teaching article
I know. I was really kicking myself for not bookmarking it. I thought it was maybe on the maa website, but their search engine is just awful. I figured someone here would know what it was.
Apr
4
awarded  Student
Apr
4
comment Looking for mathematics teaching article
I was. Thank you.
Apr
4
asked Looking for mathematics teaching article