samedi 31 janvier 2004
Intergrals and antiderivatives
I need to take a break from Sociology homework. So here's something fun for you all to see:
ƒ (pretend this is an intergral sign, without the dash)
ƒ 2pi
0 cos x/4 dx
= ƒ 2pi
0 cos 1/4x dx
= 4 sin 1/4x] 2pi
0
= [4 sin 1/4 (2pi)] - [4 sin 1/4 (0)]
= 4 sin pi/2 - 4 sin 0
= 4 (1) - 4(0)
= 4
m = x1/2 + 2 (9, 10)
m = f'(x)
f'(x) = x1/2 + 2
F(x) = x1/2 + 1 / 3/2 + 2x + C
y = 2/3x3/2 + 2x + C
(10) = 2/3 (9)3/2 + 2 (9) + C
10 = 18 + 18 + C
-26 = C
y = 2/3x3/2 + 2x - 26
Amazing how stuff like this flies out of your brain so quickly isn't it? I no longer have a single clue what this stuff means. Seeing this makes me appreciate my classes all the more right now :) Well, I'm off to see Win a Date. Then I have to be at church tomorrow morning at 7am - oh the inhumane time!
Libellés : college
