Day 5  Happy Friday!!.

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Presentation transcript:

Day 5  Happy Friday!!

Finding domain Function is linear: all real numbers Function is quadratic: all real Function if cubic: all real Function is rational: 1/(x+4), solve denominator for zero. Function is and even root: solve what is under the radical for zero. Function is odd root: all real

Domain Examples What is the domain of: y= -4x+2 Y= 1/(x+2) Y= sqrt( -4x+7)

Interval notation: Open Parentheses: when number(point) is not included (lower bound, upper bound) Brackets: when number (point) is included [ lower bound, upper bound ] Mix: you can have variations like : (lower bound, upper bound]