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# HC Basic Functions

### Basic Functions

function vertical line test
inverse horizontal line test
domain x values
range y values
x-intercept let y = 0
y-intercept let x = 0
y = f(x - h) shift to the right by h units
y = f(x + h) shift to the left by h units
y = f(x) - k shift downward by k units
y = f(x) + k shift upward by k units
y = -f(x) reflect across x-axis
y = f(-x) reflect across y-axis
tan(x) sin(x)/cos(x)
cot(x) 1/tan(x) = cos(x)/sin(x)
csc(x) 1/sin(x)
sec(x) 1/cos(x)
sin^2(x) + cos^2(x) 1
sin^2(x) + cos^2(x) = 1 divide by cos^2(x) to get another identity and divide by sin^2(x) to get another identity
Created by: mbonneau