3.2.2 Greatest hits from previous weeks

3.2.2.1 How to calculate contour integrals with Mathematica?

http://mathematica.stackexchange.com/questions/34073/how-to-calculate-contour-integrals-with-mathematica

 
How to calculate the integral of $\frac{1}{\sqrt{4 z^2 + 4 z + 3}}$ over the unit circle counterclockwise for each branch of the integrand?
 

- asked by user64494 (20 votes), answered by Artes (39 votes)

3.2.2.2 How do I remove grid from this photo?

http://mathematica.stackexchange.com/questions/88494/how-do-i-remove-grid-from-this-photo

 
I found this cat a month ago, and I'm not his owners' friend so the mosquito grid was the inevitable problem. I would like to post-process this photo to get rid of it, but I don't know exactly how  ...
 

- asked by Nakilon (30 votes), answered by nikie (49 votes)