MTH-230 Solutions to HW, Sections 4.5-6

MTH-130 Precalculus Practice Test 2

Here is the practice test we'll go over on Friday, October 19.

The answers are below the break:

HW for Diff Eq's Assigned 10/15/12

We moved on to differential operators (Section 4.5) and the annihilator method of undetermined coefficients (Section 4.6). The homework for these sections is as follows:

Section 4.5: #1, 5, 9, 11, 21-31 odd, 35, 37, 39
Section 4.6 #1-21 odd, 33, 35, 37

We didn't spend much class time on it, but in Chapter 5 covers applications of 2nd order linear DE's as solved by the methods of Chapter 4. So far, the assignment is as follows:

Section 5.1: #1, 15-18 all
Section 5.2 #1, 15-17 all
Section 5.3 #2, 3

These all cover simple harmonic motion (5.1: free undamped, 5.2: free damped, and 5.3: forced). Section 5.4 will cover other applications of linear 2nd order DE's with constant coefficients, mainly LRC circuits. There will be problems assigned from this section later.

MTH-130 Precalculus Test 2

The test I announced last week is postponed. We will have the test review on 10/19 and the test will be in the Testing Center from 10/20 to 10/26. The Chapter 2 homework will also be due on 10/26. Check back here for the practice test.

MTH-130 Homework to Attempt by 10/12

Section 2.4: Vocab check and #5-57 odd, 69-73 odd
Section 2.5: Vocab check and #9, 15, 19-27 odd, 33 (part a), 37 (part a)
Section 2.6:  Vocab check and #5, 9-41 odd, 49, 55-59 odd