Math 125 Discussion 28:  Thursday Nov 29, 2007

 

0. Announcements:

Hwk #9 is due next Tuesday, December 4!  Hwk # 9.  Pg 257  11, 23,  33, 45.

 

Note: The area problems on the test 4 review are the wrong ones!

Any questions on the the Test 4 Review?

 

This week's movie is "Sicko""  (the last movie this semester)

Show times are Wed. 2:45 - 4:45, Thurs. 3-5 & 6-8, Fri 7-9

 

 

1.  DDFD's # 28

 

 

 

2. First sketch y = x2 - x

Then integrate over (0,1) , then over (1,2) & discuss finding the area bounded by the function and y = 0.

Then by the function, y = 0, and between x = 1, & x = 2.

 Then bounded by  y = x2 - x, y = 0 and x = 2

 

 

3. Integration by substitution, or change of variable integration.

  a.  Find u

  b.  Find du

  c.  Make substitution

  d.  Integrate

  e.  Rewrite as a function of x.

 

T 11-6

4.5 Integration by Substitution

7-21,33-58, 69-75, 89-91

 

Hwk # 9.  Pg 257  11, 23,  33, 45.

 

4.  Take Test 4