Math 110: Precalc 1 1

• When you first arrive in class:– If you have any questions about the homework

please put the question #’s on the board• If someone has already put your question # up, and

you’d like to see an explanation, please put a check mark next to the problem

• The idea being that problems that lots of people are finding difficult will be clearly marked

• We’ll start with ≤ 10 minutes of Q+A

Math 110: Pre-Calculus 1

Instructor: Mike Panitz

(mpanitz@cascadia.ctc.edu)

Math 110: Precalc 1 3

Contact Info

• Sending me your email address before Friday, 5pm, and you will get you 2.5 points of extra credit.

• Subscribing to the Google Group before Friday, 5pm, will get you 2.5 points of extra credit.

Math 110: Precalc 1 4

Calculators on Exams

• You’re allowed/encouraged to use your graphing calculators on the exams

• ALL MEMORY WILL BE CLEARED!!– So any programs that you’ve loaded into it will

be removed.– This will be done immediately before each

exam

Math 110: Precalc 1 5

Exam #1

• This will be on Wednesday, April 18th

Math 110: Precalc 1 6

• Today’s Topics– Q+A– Solving Equations using your Graphing Calculator– Quadratic Equations:

• Discriminant

• Solving By Factoring

• Solving By Completing the Square

• Solving By the Quad. Formula

– Radical Equations:• Strategy for Solving

• Equations that are quadratic in form

– Absolute Value Equations

Math 110: Precalc 1 7

• Reading review for this class:– § 1.2 – Using Your Calculator To Solve Equations– § 1.3 - Quadratic Equations– § 1.5 - Radical and Absolute Value Equations

• Reading for next class:– § 2.2 – Functions

• Ignore § 2.2.4 (“Operations On Functions”) for now

– § 2.3 – Graphs of a Function– § 2.5 - Linear Function & Models