Finding Limits in several variables
Smiley Face using parametric equations
Why I get the "Set::write: "Tag Times in is Protected." error?
Crack CAPTCHA using deep learning
How to add a vertical line to a plot
How to tell Mathematica that certain variables are real/imaginary, integer-valued, etc
How to graph a sphere with cartesian equations?
Finding Limits in several variables https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=21544
Is there a way to find a limit of a multivariable function, like $$\lim_{(x,y)\to (0,0)} f(x,y)$$ with Mathematica? When $f$ is continuous, we can use $$\lim_{(x,y)\to (0,0)} f(x,y)=\lim_{(x,0)\... [functions] [calculus-and-analysis]
asked by Dominic Michaelis https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5899
32 votes answered by whuber https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=91
42 votes Smiley Face using parametric equations https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=137669
I need to know the parametric equations for this smiley face and how to draw it in Mathematica. I'm completely lost. [plotting] [parametric-functions] [homework]
asked by Woeseph https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=46575 1 vote answered by Bob Hanlon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9362
5 votes Why I get the "Set::write: "Tag Times in is Protected." error? https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=11868
Why I get the error below with this code: ... [vector-calculus]
asked by Aurelius https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1669 10 votes
answered by Mark McClure https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=36
13 votes Crack CAPTCHA using deep learning https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=143691
Deep convolutional neural networks are very good at computer vision related tasks. Optical Character Recognition (OCR) is one important branch of computer vision. In fact, the convolution neural ... [machine-learning] [neural-networks] [ocr]
asked by xslittlegrass https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1364 89 votes
answered by xslittlegrass https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1364
98 votes How to add a vertical line to a plot https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=3561
In the plot below I would like to add two vertical lines at $x = \frac{\pi}{15} \pm \frac{1}{20}$. How can I do that? ... [plotting]
asked by sjdh https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=515 71 votes answered by Ajasja https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=745 88
votes How to tell Mathematica that certain variables are real/imaginary, integer-valued, etc
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=66273
I'm trying to expedite some quantum mechanical calculations (expectation values etc.) by running them through Mathematica. When I say, for example, ... [functions] [complex] [assumptions] [variable-definitions]
asked by Matthew Brunetti https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=22304 45
votes answered by SquareOne https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=19960
30 votes How to graph a sphere with cartesian equations? https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=24169
I'm new to Mathematica and I need to ask how to graph a sphere, cylinder, etc.. using cartesian equations. For example in sphere's case $x^2+y^2+z^2=1$ I tried to use ... [plotting]
asked by German https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=7145 8 votes answered by Dr. belisarius https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=193
14 votes