Brad Fitzpatrick (brad) wrote,
Brad Fitzpatrick
brad

Mathematica? I wish.

I feel so dirty. (I'll explain in a second)

I don't own or know how to use any high-end mathematics software. I once had R skillz, but they've been fading over the past year or so.

So, when it came time to find the average value of the function sin(wt)cos(wt+pi/8), what do I do?

use constant PI => 3.14159;
use constant PHI => PI / 8;
for ($t=0; $t<PI*20; $t+=0.01) {
  $val = sin($t)*cos($t+PHI);
  $points++; $sum += $val;
}
printf "avg = %.4f\n", ($sum/$points);
I got the answer correct (and 3 other similiar problems), but this is totally the wrong way to do it.

I really wish I were good at math ... I used to be a lot better, but I'm forgetting so much. There are so many things I wish I were good at, but it's a matter of time.

I want to learn German more. I bought a whole pack of "learn German" CD-ROMs .... I should spend more time working with those.

*sigh*

Tags: lang
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