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63 votes

Is `sudo pip install` still a broken practice?

package-management permissions python pip asked Jul 25, 2016 at 2:26
askubuntu.com

26 votes

Why can't an electron be observed?

quantum-mechanics optics electrons asked Feb 15, 2016 at 15:52
physics.stackexchange.com

8 votes

Why does a delta-function potential well have only 1 bound state?

quantum-mechanics wavefunction potential schroedinger-equation dirac-delta-distributions asked Oct 2, 2016 at 17:34
physics.stackexchange.com

7 votes

Is there a way to save turtle's drawing as an animated GIF?

python gif turtle-graphics asked Dec 25, 2016 at 9:23
stackoverflow.com

6 votes

Print_r doesn't return anything; var_dump shows NULL

php wordpress echo webhooks braintree asked Dec 24, 2015 at 19:04
stackoverflow.com

6 votes

Find all $z$ such that $e^z=6i$

complex-numbers asked Feb 13, 2016 at 0:19
math.stackexchange.com

6 votes

Evaluate the integral $\int_0^{2\pi} \frac{d \theta}{5-3 \cos \theta}$

complex-analysis complex-numbers contour-integration asked Apr 2, 2016 at 21:29
math.stackexchange.com

6 votes

Verify the following equation: $\sin (x+iy)=\sin x \cosh y+i \cos x \sinh y$

proof-verification complex-numbers asked Sep 15, 2016 at 4:58
math.stackexchange.com

5 votes

Limits with complex numbers

limits complex-numbers asked Jan 26, 2016 at 15:57
math.stackexchange.com

5 votes

Find all ordered pairs $(a,b)$ such that $1/a + 1/b = 3/2018$ and $a,b$ are positive integers

algebra-precalculus inequality contest-math integers asked Feb 23, 2019 at 18:38
math.stackexchange.com

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