Question

Help with calculation of a integral $ \int_c (x^2 + y^2)^{-1/2} \mathrm{e}^{-i k\sqrt{x^2 + y^2}}\,\mathrm{d}x $ (WolframAlpha fails)

score 149 · Answer 1 · 2016-08-13 16:59:52

Help with calculation of a integral $ \int_c (x^2 + y^2)^{-1/2} \mathrm{e}^{-i k\sqrt{x^2 + y^2}}\,\mathrm{d}x $ (WolframAlpha fails)

score 282 · Answer 2 · 2016-09-02 15:22:48

282

Views

WolframAlpha says that $\sum^n_{k-1}\left\lfloor \frac{n}{k} \right\rfloor \phi(k) \not = \sum^n_{k=1}k$ which is not true

Published on 02 Sep 2016 - 15:22

score 173 · Answer 3 · 2026-03-25 11:21:23

173

Views

Choosing the correct branch in $\int \frac{a-\cos(\theta)}{b-\cos(\theta)} d\theta$

Published on 25 Mar 2026 - 11:21

score 248 · Answer 4 · 2016-09-05 18:36:02

248

Views

Why does $|x^2| = x^2$, only if $x$ is positive? (according to Wolfram Alpha)

Published on 05 Sep 2016 - 18:36

score 1k · Answer 5 · 2016-09-26 20:18:37

1k

Views

wolfram alpha doesn't plot implicit function with range

Published on 26 Sep 2016 - 20:18

score 273 · Answer 6 · 2016-09-29 12:49:36

273

Views

Continuity of the argument of a complex number.

Published on 29 Sep 2016 - 12:49

score 124 · Answer 7 · 2016-10-04 04:21:58

124

Views

WolframAlpha Equation Solving: what do these solution conditions mean?

Published on 04 Oct 2016 - 4:21

score 135 · Answer 8 · 2016-10-09 16:03:47

135

Views

Graphing Waves in Wolfram|Alpha

Published on 09 Oct 2016 - 16:03

score 41 · Answer 9 · 2016-10-22 22:11:13

41

Views

Why does Wolfram provide different graphs for $x^2 = 4$, $x^2 - 4 = 0$?

Published on 22 Oct 2016 - 22:11

score 139 · Answer 10 · 2016-10-29 13:34:06

139

Views

Interpret Wolfram Alpha Closed Form Equation

Published on 29 Oct 2016 - 13:34

score 1.3k · Answer 11 · 2016-11-01 02:41:22

1.3k

Views

$\log(0)$ is $-\infty$, but $\log(0)=x$ is undefined

Published on 01 Nov 2016 - 2:41

score 32 · Answer 12 · 2016-11-02 20:37:31

32

Views

Why does adding zero change the result on wolframalpha? (i.e. AB != AB+0)

Published on 02 Nov 2016 - 20:37

score 667 · Answer 13 · 2016-11-04 04:22:46

667

Views

Wolfram Alpha doesn't show all solutions for square root of complex number?

Published on 04 Nov 2016 - 4:22

score 47 · Answer 14 · 2016-11-04 23:34:19

47

Views

What is the meaning of the Mean output for Matlab's Expstat()?

Published on 04 Nov 2016 - 23:34

score 82 · Answer 15 · 2016-11-05 13:19:40

82

Views

Is $y\approx0.206$ a solution to $e^{iy}\cdot\left(e^{iy}+e^{-iy}\right)=e^{iy}\cdot\left(8ye^{4y^2}\right)$?

Published on 05 Nov 2016 - 13:19

List Question

Help with calculation of a integral $ \int_c (x^2 + y^2)^{-1/2} \mathrm{e}^{-i k\sqrt{x^2 + y^2}}\,\mathrm{d}x $ (WolframAlpha fails)

WolframAlpha says that $\sum^n_{k-1}\left\lfloor \frac{n}{k} \right\rfloor \phi(k) \not = \sum^n_{k=1}k$ which is not true

Choosing the correct branch in $\int \frac{a-\cos(\theta)}{b-\cos(\theta)} d\theta$

Why does $|x^2| = x^2$, only if $x$ is positive? (according to Wolfram Alpha)

wolfram alpha doesn't plot implicit function with range

Continuity of the argument of a complex number.

WolframAlpha Equation Solving: what do these solution conditions mean?

Graphing Waves in Wolfram|Alpha

Why does Wolfram provide different graphs for $x^2 = 4$, $x^2 - 4 = 0$?

Interpret Wolfram Alpha Closed Form Equation

$\log(0)$ is $-\infty$, but $\log(0)=x$ is undefined

Why does adding zero change the result on wolframalpha? (i.e. AB != AB+0)

Wolfram Alpha doesn't show all solutions for square root of complex number?

What is the meaning of the Mean output for Matlab's Expstat()?

Is $y\approx0.206$ a solution to $e^{iy}\cdot\left(e^{iy}+e^{-iy}\right)=e^{iy}\cdot\left(8ye^{4y^2}\right)$?

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