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2d
reviewed Reject and Edit Find a triple integral using spherical coordinates.
2d
revised Find a triple integral using spherical coordinates.
added 8 characters in body
Jun
19
comment Meaning of a Dirac function
If you've studied vector calculus, you might be interested to note that it pops up naturally here: $$\nabla\cdot\left(\frac{\hat{r}}{\|r\|^{2}}\right)=4\pi \delta^{3}(\vec{r})$$ And this is extremely useful in deriving Coulomb's law for a pointlike particle.
Jun
19
revised How to solve this integral and have a result in term of arccos?
added 12 characters in body
Jun
19
comment $\int { \max { \left( 1,{ x }^{ 2 } \right) dx } }$
@5xum This function doesn't have a well-defined anti-derivative; I assumed that he would interested in the integral over some set, if you think I should delete my answer I will? :)
Jun
19
revised $\int { \max { \left( 1,{ x }^{ 2 } \right) dx } }$
added 48 characters in body
Jun
19
answered $\int { \max { \left( 1,{ x }^{ 2 } \right) dx } }$
Jun
19
revised $\int { \max { \left( 1,{ x }^{ 2 } \right) dx } }$
added 5 characters in body; edited title
Jun
18
answered Probability question with a twist.
Jun
18
revised Integral of derivative of rational map on unit disk
added 17 characters in body
Jun
18
answered Möbius transformation and stereographic projection
Jun
18
answered What is $[M_1,M_2]$ equal to? ($M_1$ and $M_2$ are matrices)
Jun
17
comment Use of stochastic calculus outside finance?
Stochastic processes appear a lot in nature, especially in Quantum Mechanics. Have a look at the Stochastic Schrodinger Equation. They also appear in Thermodynamics and kinetic theory (cf. the Wiener process)
Jun
17
answered Contour Integration Along Part of the Unit Circle
Jun
17
accepted Line Integration over a broken line
Jun
17
asked Issues with solving PDE
Jun
17
accepted How to practically classify singularities in complex analysis?
Jun
16
comment Showing internal angles of a square are unaffected by a mapping
I understand now, I missed that - Thanks very much!
Jun
16
accepted Showing internal angles of a square are unaffected by a mapping
Jun
16
comment Showing internal angles of a square are unaffected by a mapping
@MarkBennet Yes, it appears to; but why does this help?