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wchargin
  • Member for 12 years, 7 months
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25 votes
1 answer
11k views

Proving any linear transformation can be represented as a matrix

13 votes
2 answers
3k views

Why does this $u$-substitution zero out my integral?

11 votes
6 answers
4k views

In what context are these mathematical symbols used?

11 votes
3 answers
1k views

Differentiating both sides of a non-differential equation

7 votes
0 answers
5k views

What's the right way to write big-O?

6 votes
1 answer
5k views

Cancelling differentials

6 votes
2 answers
380 views

How do we reconcile these two definitions of categorical cones?

5 votes
2 answers
4k views

Mathematical roses with $4n+2$ petals

4 votes
2 answers
916 views

What is the "proof" for this vector calculus theorem besides intuition?

3 votes
2 answers
673 views

Why is there no vector component product operation?

2 votes
1 answer
167 views

Infinitesimals in the denominator

1 vote
1 answer
327 views

Change of variables in double integral - what's wrong?

1 vote
2 answers
217 views

Can you take off a sweater while wearing headphones?

1 vote
1 answer
394 views

What's the expected score for guessing on a word bank/"matching" test?

1 vote
2 answers
635 views

Word for "openness"/"closedness" of an interval

1 vote
1 answer
523 views

Is an integral without a differential component on a finite number of points just a sum?

1 vote
2 answers
89 views

How can I solve a difference of inverse sines?

0 votes
4 answers
106 views

Is there a simpler way to compute this antiderivative?