Reputation
2,894
Top tag
Next privilege 3,000 Rep.
Cast close & reopen votes
Badges
2 18 54
Impact
~99k people reached

Sep
30
asked Is the problem asking to show that $r\times \nabla \psi$ satisfies wave equation wrong?
Sep
27
comment Linear algebra question
@Arturo Magidin This is the exact version. You can have a look at it here (page 13)
Sep
27
asked Linear algebra question
Sep
22
awarded  Nice Question
Sep
21
accepted Help with volume integration
Sep
20
comment Help with volume integration
Thanks for answering, how did you get: $\int_{-1}^1 \frac{(r -c t) }{ \left(r^2 + c^2 - 2 \, c \cdot r \cdot t \right)^{3/2} } \mathrm{d} t = \frac{ 1 - \operatorname{sign}(c - r ) }{r^2}$? This is where I was stuck.
Sep
20
comment Help with volume integration
The numerator in the first integtrand is $r-c\cos \theta$
Sep
20
revised Help with volume integration
edited tags
Sep
20
revised Help with volume integration
added 121 characters in body
Sep
20
asked Help with volume integration
Sep
19
awarded  Nice Question
Sep
18
accepted Linear Algebra Problem
Sep
18
revised Linear Algebra Problem
deleted 1 characters in body
Sep
18
asked Linear Algebra Problem
Sep
18
comment Does $\lim_{x\rightarrow 0}\frac{c}{|x|}$ exist?
Your calculus textbook does warn you about the case $g(x)\neq 0$ so why consider it?
Sep
17
comment Intuition behind this theorem in linear algebra
@Arturo what do you mean by: "... vector space is free on the basis"
Sep
17
comment Intuition behind this theorem in linear algebra
Reference: Page 95 , 2nd Ed. Page 56 in third edition, here is the preview
Sep
17
asked Intuition behind this theorem in linear algebra
Sep
17
revised How could we manually approximate $\sum_{i=1}^{50} i! = 3.1035 \times 10^{64}$?
edited tags
Sep
17
answered How could we manually approximate $\sum_{i=1}^{50} i! = 3.1035 \times 10^{64}$?