2 posts tagged with mathematics by PuGZ.
Displaying 1 through 2 of 2.

Related tags:
+ (100)
+ (38)
+ (22)
+ (22)
+ (18)
+ (16)
+ (15)
+ (15)
+ (12)
+ (11)
+ (9)
+ (9)
+ (8)
+ (8)
+ (6)
+ (6)
+ (6)
+ (6)
+ (6)
+ (5)
+ (5)
+ (5)
+ (5)
+ (5)
+ (5)
+ (5)
+ (4)
+ (4)
+ (4)
+ (4)
+ (4)
+ (4)
+ (4)
+ (4)
+ (4)
+ (4)
+ (4)
+ (4)


Users that often use this tag:
Anonymous (5)
Nomyte (4)
phrontist (4)
alligatorman (4)
zaebiz (3)
Blazecock Pileon (3)
leahwrenn (3)
tnygard (3)
stebulus (2)
madcaptenor (2)
junipero (2)
gleuschk (2)
Jimbob (2)
crapmatic (2)
King Bee (2)
giggleknickers (2)
ZeroDivides (2)
vizsla (2)
Earl the Polliwog (2)
perissodactyl (2)
PuGZ (2)
jeffburdges (2)
Neiltupper (2)

Fourier series confusion and pre/post-integration substitution dilemmas.

Asking for a friend: With the use of Fourier series, I'm trying to solve an ODE of the form L*y'' + R*y' + y/C = r(x), where r(x) = 1 - x^2 for |x| <= 1, i.e. has a period of 2. To do so I need to represent 1 - x^2 as a Fourier series. In doing so I have to integrate e^(-n * i * pi * x), but I've reached a stumbling block. [more inside]
posted by PuGZ on Sep 13, 2009 - 2 answers

 

Inequalities and direction-flipping

Why is it that when I solve the inequality 0 ≤ arccos(x) <> cos(π/4)? Why do the operators switch direction? [more inside]
posted by PuGZ on Oct 19, 2007 - 11 answers

Page: 1