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Alg 2 Final Cheat Sheet by

Expone­ntial Form

y=abx
A change to x shifts the function +left or -right

To Eval Logs

Example: log(base 9)27 to.... 9x=2­7........ x=3/2

Example of Solving Exp Equations

73x=20 to log73­x=­log­20.... divide both sides by 3log7...... get x=log2­0/3­log­7..... finally use the calculator to end.

Trig Identities

Half Angle Identities

Trig Identities and Unit Circle

Quadratic Formula

Double Angle

Note for Linear Modeling

Find line of best fit, f(x) is the prediction of that number plugged into formula.

Properties of Parabolas Note

Find AOS first; x=number of AOS

Identities

cscx= 1/sinx
secx=1­­/cosx
cotx=1­­/tanx

tanx=s­­in­x­/cosx
cotx=c­­os­x­/sinx

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