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1d
answered Proving a partial sum with induction
1d
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
Apr
3
answered groups, subgroups, cosets
Apr
2
comment group theory proof
If you can see that equality, than all that remains is to show that every element of the set on the right has order exactly $d$ --- that is, that its $d^{\mathrm{th}}$ power is the identity and that no lower power is.
Apr
2
comment group theory proof
What have you tried?
Apr
2
comment Is $\log 2\pi$ rational?
@Mike can you expand on this?
Apr
2
comment Cartesian to polar coordinates - Integration
I think you left out the $r$ in the volume element...so the OP's answer is actually correct.
Mar
31
answered Probability counting question
Mar
31
comment Estimating Eigenvalues and Eigenvectors from an 'eignpicture'
Just because I know that book pretty well, and I don't imagine many books have these pictures (I've never seen them anywhere else).