Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
29 Cards in this Set
- Front
- Back
|
Animation
|
setup, define, lines/shapes
change, delay, clear draw, end |
|
|
Rotation matrix
|
[sinx,cosx][-sinx,cosx]
|
|
|
sin2x
|
2cosxsinx
|
|
|
sin(A+B)
|
sinAcosB+sinBcosA
|
|
|
cos(A+B)
|
cosAcosB-sinAsinB
|
|
|
Sin(A-B)
|
sinAcosB-sinBcosA
|
|
|
cos(A-B)
|
cosAcosB+sinAsinB
|
|
|
cos2A
|
cos^2A-sin^2A
|
|
|
pythagorean identity
|
sin^2x+cos^2x=1
|
|
|
time for freely falling object to hit the ground
|
root(h/16)
|
|
|
add number in a phase shift
|
move left
|
|
|
subtract number of phase shift
|
move right
|
|
|
rectangular coordinate
|
coordinates are length of trangles edges (not hypotenuse)
(horizontal length, vertical length) |
|
|
polar coordinate
|
(radius, theta)
|
|
|
combination
|
order doesn't matter
n! / r!(n-r)! |
|
|
permutation
|
order matters
n! / (n-r)! |
|
|
binomial probability distribution
|
totalCn * p^n * (1-p)^(1-n)
|
|
|
central limit theorum
|
as n increases, everything becomes more normal
|
|
|
normalcdf
|
z-score --> percentage
|
|
|
invnorm
|
percentage --> z-score
|
|
|
standard deviation with proportions (normal kind)
|
root[(p(1-p))/n]
|
|
|
moe
|
zo
|
|
|
confidence interval
|
phat +- moe
|
|
|
worst case scenario
|
use .5 for p
|
|
|
standard deviation W/O GRAPH
and mean |
STANDARD DEVIATION root[%(mean-#)^2 + %(mean-#)^2 + %(mean-#)^2 + %(mean-#)^2]
MEAN %(#) + %(#) + %(#) |
|
|
solving absolute value inequalities
|
1) the same that you simplified it to
2) flip the inequality and make the value negative |
|
|
ellipses: a
|
length from center to vertex
|
|
|
ellipses: b
|
length from center to co-vertex
|
|
|
ellipses: c
formula |
length from center to focus
c^2=a^2-b^2 |
