WELCOME!!! Studio College Algebra Fall 2010

1. WELCOME!!! Studio College AlgebraFall 2010 Class website: www.math.ksu.edu/math100studio

2. My Contact Info • Carlos Castillo-Garsow • cwcg@math.ksu.edu • Monday and Tuesday: 12:30-1:30 CW125 • By appointment: cwcg@math.ksu.edu

3. Things you need to complete BEFORE next lab on Thursday, August 26th/(or Friday, August 27th) • Download the course syllabus from the class website • Figure out what is due next week • Write down on your calendar/planner the exam dates and FINAL exam date; there are no make-ups. • Booking airline tickets to go home on/before December15th is NOT a reason to reschedule or miss the final. Please re-schedule your travel plans if you’re planning to leave before or on December 15th.

4. EXAM DATES • PRE TEST – Yesterday, 7:15pm • Tuesday September 14;   7:15pm-8:15pm • Tuesday October 12; 7:15pm-8:15pm • Tuesday November 9; 7:15pm-8:15pm • POST TEST – Tuesday December 7, 7:15pm • Wednesday December 15th;   (Final Exam) 6:20pm-8:10pm NO MAKEUPS; if there is a documented personal emergency you must present us with a letter from the office of student life, then we average the other two exams for the missed one; you CANNOT miss the final exam.

5. EXAMS • Exam rooms will be posted on our website within 2 weeks. • BRING YOUR WILDCAT ID to the examination. THIS IS MANDATORY

6. GRAPHING CALCULATOR • TI 83/84 Plus • TI 85/86 okay • CANNOT HAVE TI 89/92 or anything with a QWERTY keyboard or CAS

7. GRADING • Book homework: Scaled to 60 points • Online homework: Scaled to 60 points • Studio Labs: Scaled to 60 points • Participation/Attendance/Iclicker: Scaled to 60 points • Exams: 3 of them at 80 points a piece • Final: 140 points • Pre/Post Test: 10 points

8. K-State Online • You can see how many points you received on each assignment on K-State online. • We take all the curves into account at the end of the semester; these will not be shown in KSOL.

9. What you need for lecture • iClicker • Notebook • Math Journal • Writing implement • Brain • A power switch on your phone.

10. = • a = b • a is identical in value to b • Anywhere I see an ‘a’ I can replace it with a ‘(b)’ and vice versa • Ex: a+6=b/7 7(a+6)-3b/7=b/14

11. = !Ex (not example): 2+7=9*2=18 This is bad because it says that 2+7 is identical in value to 9*2 or that anywhere I see a 2+7, I can write a (9*2), which is not true.

12. f(x) “eff of eks” The result of doing f to x If you have an “input” value x, and you “do f” to it, the value you get out is called f(x)

13. function A rule that assigns to each element of the domain exactly one element from the range Something that you do to a number. When you do something to a number, the result is one number. You don’t get multiple results. Ex: f(x)=2x-7 f(3.1) Imagine x=3.1, use meaning of = f(3.1)=2*(3.1)-7

14. function !Ex: This gives more than one “result” when you “plug in” a value for x.

15. Given the function f(x)=x2 -2Mx, where M is some parameter, find f(3). • 3 • 3M • 9-6M • 6-9M • None of the above.

16. solution • f(x)=x^2-2Mx • x=3 • f(3)=3^2-2M3 • f(3)=9-6M

17. Domain • All numbers that it makes sense to use as an input • Ex: g(k)=k^2+7 • Domain is all real numbers • Ex: • In order for this to make sense so the domain is

18. Range • All the numbers that it makes sense to get as a result of doing the function (as outputs) • Ex:

20. Line • f(x)=mx+b • Y-intercept is f(0)=m*0+b=b.

21. slope

22. slope • Fancy way of saying that if you change x by any amount, the change in y is always m times as big as the change in x.

23. Slope Ex:

24. Badly drawn slope Ex:

25. Find the slope of the line connecting the points (2,3) and (4,8). • 5/2 • -5/2 • 2/5 • -2/5 • None of the above

26. Solution Old: (2,3) New: (4,8)