Recent content by zxh

nobody? is this graduate stuff?

Normally, complex plot visualization is a 4D problem. Coloring re or I am separately isn't very intuitive. Otoh, using Mathematica's ParametricPlot3d gives all the information and leaves us with the z-axis unused. Example for z→z+k/z: I'm trying to find a surface which when projected onto...

Alright, makes me look tired, but i thought the similarity with the logarithm was too salient not to connect the two.

Homework Statement How do you get from 1/p +1/q = 1 to (p-1)(q-1) = 1? (http://de.wikipedia.org/wiki/Konjugation_%28Reelle_Zahlen%29" ) Homework Equations Is log(xy) = log(x) + log(y) in any way related to this, i.e the rewritten subject title? The Attempt at a Solution Manipulate[...

thanks, good one.

Thanks, that's what i was looking for. I'm not too concerned about range definitions. I came to this looking for a trig definition of a (half) circle (not the pythagorean Sqrt(r-x^2)). At first i was wondering why Cos(Sin(x)) (given that the 2 functions for a circle in a parametric plot are...

So the title would be true for -sin, viewed as a curve?

Sry, noob, but i didn't find this anywhere.