I'm losing you and it's effortless.
Monday, August 21, 2006
++ mood: -_-
++ music: Over My Head. Fray.
I finally finished my Engalge. Not really sure if it's all stuck up there. I think I still need to review the first part. It's still a bit blurry. n(n-1)(n-2)...(n-k+1)/k! is equal to the numerical coefficient. |x| > a then -a>x and a
Ok. I shall list what do I know.
Rectangular parallelipiped.
SA = 2ac+2bc
TSA = 2(ac+bc+ca)
V = L.W.H
Cube.
SA = 4a squared.
TSA = 6a squared
V = A cube
Rt. triangle.
Area = 1/2 bh
Oblique triangle.
Area = Squareroot(s)(s-a)(s-b)(s-c) where in s= (a+b+c)/2
Arg. I'm going insane. Ok. Continue!
Trapezoid.
Area = 1/2 (b1+b2)h
Parallelogram.
Area = ... shit.
ok. Area = bh
Sector of a circle.
Area = 1/2 Rc or 1/2 Rsquared Theta
Ellipse.
Area = Pi. (semi-major axis)(semi-minor axis)
Parabola.
Area = 2/3 ld
Prism.
SA = perimeter of cross section x length of lateral edge
TSA = SA + area of two bases
V = bh
Cylinder
SA = 2 pi r h
TSA = 2 pi r h + 2 pi rsquared)
V = pi rsquared h
Ok. wala lang.
y =a sin(bx-c)
|a| = amplitude
period = 2/b
|c/b| = phase shift
if c>0 then shift to the right.
if c<0 then shift to the left.
division of period = period/4
* sin starts: 0 - max - 0 - min. x axis first.
* cos starts: max - 0 - min - 0. y axis first.
.jump to engalge.
sum of roots. r1 + r2 = -b/a
product of roots. r1+r2 = c/a.
ok. whatever. That's enough. My head hurts. Gah. Brain-buster. freak.