Math 110: Precalc 11 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

Math 110: Precalc 13 Exam #1 This will be on Wednesday, April 18 th –NEXT LECTURE Exam will take 1 – 1.5 hours –You will have the entire class period for the exam –You’re welcome to take more time, but we’ll have to move to a different 3:20pm

Math 110: Precalc 14 Exam #1 Grading will be more detail-oriented than on the homeworks There will be multiple versions, with each one given a distinct color –You will not be allowed to sit next to someone with the same exam

Math 110: Precalc 15 Exam #1 Probably about 10 questions, ~10 points/question –For all questions, ONE POINT for the correct answer –Remainder for SHOWING YOUR WORK and for CHECKING YOUR WORK Checking (where possible) will be required, and worth points I’ll try to make it clear on the exam which questions you HAVE to check your work on You will need to write out any formulas, before you use them. Keep everything in fraction form!

Math 110: Precalc 16 Calculators on Exams You’re allowed/encouraged to use your graphing calculators on the exams –I may have ‘loaner’ calculators, I might not 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 17 Exam #1:Study Tips Go through, and make sure you can answer, step by step, and explain, every question from the In-Class Exercises, homeworks, and book examples on the topics Make sure that every you can fully answer every single TYPE of question –Not just ‘equations with radicals’, but –Equations with 1 radical ( ) –Equations w/ 2 radicals ( ) –Etc.

Math 110: Precalc 18 Homework Feedback: Lecture #3 ‘Solve by Factoring’ – Common mistake: –Should keep the = 0, and show how to finish this problem:

Math 110: Precalc 19 Homework Feedback: Lecture #4 Equations with radicals in them: –VERIFYING (‘checking your work’) is REQUIRED This is how you know that #28 has no solution –Not including this step means that you haven’t finished the problem –Make sure you can solve radical equations that have TWO radicals in them Quadratic Formula: –You need to first calculate the discriminant, and only then, go on to figuring out the answer

Math 110: Precalc 110 General Homework Feedback Keep everything in fraction form! Show all your work!

Math 110: Precalc 111 Today’s Topics –Q+A –Graphing a quadratic equation (a parabola) by hand –‘Maximizing Revenue’ applied problem –Finding the line of best fit (with a TI-83) Quadratic regressions The linear/quadratic regressions will be on the exam –General Exam Q + A (time permitting)

Math 110: Precalc 112 Reading review for this class: –§ 3.1 – Quadratic Function & Models –Exam Review Reading for next class: –Everything up to, and including, today’s material