Section: Week 02: Aug. 30 | MAT 112A (Fall 2021) - Calculus I and Modeling | Davidson College

Main course page
  • General

    • Expected Tues & Thurs 10:50 -- 11:50 a.m.  Email Neidinger (rineidinger) if not working or to arrange any other time.

    • Neidinger in-person Office hour:  in Chambers 3043 after class MWF 10:40 -- 11:40.

    • Basel Elzatahry in-person help sessions:  In Chambers 2130 (starting 9/7/21) on 
      Sundays 3-5p;
      Tuesdays 8-10p,
      Thursdays 8-10p.

    • The linked page will post tutor schedules for drop-in assistance, as well as links to schedule an appointment with a tutor. Located in the Center for Teaching & Learning (CTL) on the first floor of the College Library, the MSC’s drop-in hours are Sunday through Thursday, 8-11 PM, beginning Sunday, August 29. Prior to visiting for drop-in help, be sure to look at the tutor schedules to determine when an appropriate tutor for Calculus will be present. 

    • Students can ask any questions about the course here.

Week 02: Aug. 30

  • Week 02: Aug. 30

    • BRING A LAPTOP COMPUTER on Monday Aug. 30 for our "Lab" work using an Excel spreadsheet.  So in-Lab will mean in-class with laptop.

    • Discrete Models II Homework

    • Textbook section 14.2 covers Cobweb Diagrams!
      I made handouts for technique and problems, but the textbook is a consistent source.


    • Read 2.3 and 2.4 (at least through p. 110).
      Unless instructed otherwise, you may use a calculator in any way that is helpful to solve any "word problem" throughout the rest of the course.  However, if you use it in some way other than simple numerical calculation, then you must show and/or explain what command (like Solve or Graph intersection) you used.
      2.3; 7, 16, 21, 25.
      Hint 7:  Trophozorites are single-cell organisms, so when they "divide" it doubles the population.
      Hint 16:  The "1 in n" chance is the number 1/n.
      2.4; 1, 55, 61, 91, A and B below:
      Prob A:  Derive (show steps where it comes from) the trigonometric identity for 1 + cotx  by using only identities on page 105.  First change to sin and cos, simplify to get one function.
      Prob B:  In the triangle right triangle with length 1 on the x-axis, positive angle theta, and opposite side length x. , find sin \(\theta\) in terms of x (with no trig function in answer).