MATH 141 - PRECALCULUS

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• CLASS ANNOUNCEMENTS (FALL 2011)

Last Announcements … WHAT NOW?

• SOLUTIONS TO THE FINAL

Final (Chs.7-9; 10 may be skipped) … Solutions (2 hours and 20 minutes). In Fall 2011, we skipped Sections 8.3 and 8.5, as well as Chapter 10. Later terms may differ.

• I KNOW YOUR GRADES.

• Grades available at http://studentweb.sdccd.edu starting Mon., 1/9. They could be up soon after your instructors submit their grades. Grades are due from instructors by Friday, 1/6. I will submit the grades after I have resolved some “special cases.”

• Email me

• ITEM “PICK UP” OFFICE HOURS (FINAL, HW, ETC.)

• Tues., 1/10, 3:30-7:30pm, and Wed., 1/11, 6-8pm in the H-212 office area. Hopefully, campus security won’t mind me holding evening hours! Keep checking this web site for changes!

• You can email me with suggestions on good days of the week / times. Email me

• My office hours for next semester will be the same as before. Everything will be thrown away after next semester.

• CAN WE STILL USE THE WEB SITE?

Sure. Spread the word. Copy whatever you want.

You’re welcome to communicate with me in the future.

• THIS SITE WILL BE REVISED FOR THE NEW TERM. THE OLD EXAMS WILL BE DELETED.

• HAVE A GREAT BREAK!

SECTION 9.5 EXTRAS

• PLINKO! (9.5)

The Price is Right / Plinko winner (the Plinko board is in the second half): http://www.youtube.com/watch?v=vuMir11YFPs

• FUN WITH PASCAL'S TRIANGLE (9.5)

QUINCUNX ("PLINKO") APPLETS AND SITES

http://www.jcu.edu/math/isep/Quincunx/Quincunx.html (This applet's better.)

http://www.ms.uky.edu/~mai/java/stat/GaltonMachine.html

http://en.wikipedia.org/wiki/Bean_machine (Wikipedia article)

http://en.wikipedia.org/wiki/Quincunx (Wikipedia article)

The Beauty of Pascal's Triangle (See Notes 4.12)

The Magic of Pascal's Triangle (Plinko from The Price is Right and Word Jumbles)

See Chaos and Fractals by Peitgen, et al:

Announcements

• ON THE OLD FINAL FROM SPRING 2011, WE ARE TENTATIVELY CALLING THE FOLLOWING PROBLEMS “NO FAIR” FOR YOUR FINAL: #9-12 ON INVERSE MATRICES (SECTION 8.3) AND #15 ON CRAMER’S RULE (SECTION 8.5); THESE TOTAL 51 POINTS. I WILL MAKE OTHER FUN PROBLEMS FOR YOU TO WORK ON! YOUR FINAL IS STILL 250 POINTS!

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