Math 120:
Pre-calculus 2
Instructor: Mike Panitz
(mpanitz@cascadia.ctc.edu)
Today
• Exam #1
– Show up @ 1:15pm, sharp
– Bring writing utensils – pencils are good, pens
ok
– Bring your calculator
– You have the entire class time
• Should take 1 – 1½ hours
– Once you’re done, you’re free to leave
Math 120: Pre-Calculus 2!
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Today
• EXPLAIN EXPLAIN EXPLAIN!!
– If you’ve got time, go back and add more detail
– Short English explanation are good to add
• As long as I can clearly follow your work,
“too much” is better than “too little” 
Math 120: Pre-Calculus 2!
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Resetting a TI-83:
•
•
•
•
•
•
•
I need to see you clear the memory!
MEMory menu:
Reset option (push
)
Go right twice, to the ALL menu (
)
Push
Push down (
), then WAIT HERE
WHEN I’M LOOKING, push
, and
then show me the “Resetting All…” screen
Math 120: Pre-Calculus 2!
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Next Lecture
• Sum & Product Formulas
– Section (7.4 / 4e (9.4 / 3e))
• Double & Half-Angle Formulas:
– Section (7.5 / 4e (9.5 / 3e))
Math 120: Pre-Calculus 2!
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