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7.1 Integration by Parts Fri April 24 Do Now 1)Integrate f(x) = sinx 2)Differentiate g(x) = 3x.

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Presentation on theme: "7.1 Integration by Parts Fri April 24 Do Now 1)Integrate f(x) = sinx 2)Differentiate g(x) = 3x."— Presentation transcript:

1 7.1 Integration by Parts Fri April 24 Do Now 1)Integrate f(x) = sinx 2)Differentiate g(x) = 3x

2 6.2 6.3 Quiz Review Retakes by next Wed

3 Integration by Parts Let f(x) be a function that is a product of two expressions u and dv. Then,

4 How do we choose U? There are a couple of acronyms used to choose a U-expression L – Logarithmic A - Algebraic (polynomials) T - Trigonometric E - Exponential

5 Integration by Parts 1) Identify u 2) Identify dv 3) Find du 4) Find v by evaluating 5) Plug into parts formula and evaluate Note: Don’t forget the + C

6 Ex 2.1 Evaluate

7 Ex 2.1b What happens when we choose the wrong u and dv?

8 Ex 2 Evaluate

9 Ex 2.3 Evaluate

10 Closure Hand in: Integrate by parts HW: (green) worksheet p.566-567 #3-7, 17

11 7.1 Repeated Integration by Parts Mon April 27 Do Now Integrate by parts 1) 2)

12 HW Review: wkst p.566-567 #3-7 17 3) 4) 5) 6) 7) 17)

13 Repeated Integration by Parts The more complicated the function, the more likely we will have to repeat integration by parts Note: The 2nd integration by parts should be a simpler expression

14 Ex 2.4 Evaluate

15 More ex From book (if needed)

16 Closure Hand in: Integrate by parts repeatedly HW: (green) worksheet p.567 #9 11 12 19 20

17 7.1 More Repeated Integration by Parts Tues April 28 Do Now Integrate by parts

18 HW Review: wkst p.567 #9 11 12 19 20 9) 11) 12) 19) 20)

19 Manipulation with Parts Sometimes regardless of how we choose u and dv, we obtain an integral that is similar to the original This usually happens when there is both an exponential AND a trig function

20 Ex 2.5 Evaluate

21 Ex 2.5 Evaluateusing a different u and dv

22 Closure Hand in: Evaluate HW: (green) worksheet p.567 #13-16 Quiz Mon May 4

23 7.1 Tabular Integration Wed April 29 Do Now Integrate by parts

24 HW Review: p.567 #13-16 13) 14) 15) 16)

25 Tabular Integration Tabular integration is a method of integration by parts that can be used when having to repeat parts many times Tabular integration only works if u is an algebraic expression (ex: x^4)

26 Tabular Integration 1) Choose u and dv and create a table, placing dv one row above u 2) Differentiate u in a column until you get 0 3) Integrate dv in a column until every u has a partner. 4) In a 3rd column, alternate signs 5) Match up each u and v

27 Ex Evaluateusing tabular integration

28 You try Evaluateusing tabular integration

29 Closure Hand in: Evaluateusing tabular integration HW: (green) worksheet p.567 #52 53 55 56 Quiz Mon May 4

30 7.1 Integration by Parts Practice Thurs April 30 Do Now Integrate using parts 1) 2)

31 HW Review: p.567 #52 53 55 56 52) 53) 55) 56)

32 Practice (blue) Worksheet p. 520 #1-11, 19-20, 43-45

33 Closure Journal Entry: When using integration by parts, what makes a good u and dv? What expressions would we want to choose as u? HW: Finish worksheet p.520 #1-11 19 20 43-45 Quiz Mon May 4

34 7.1 Integration by Parts Review Fri May 1 Do Now Integrate using tabular integration

35 HW Review: wkst p.520 #1-11 19-22 43-45 1) 2) 3) 4) 5) 6) 7) 8) 9) 10) 11)

36 19-22 43-45 19) 20) 21) 22) 43) 44) 45)

37 Quiz Review Integration by Parts –Single Integration by Parts –Repeated Integration Repeat parts, or use tabular if possible –No bounds Remember LATE

38 Practice worksheet (green) worksheet p.567 #25-32 no bounds Also try textbook p.403-404 #7-25 odds, 49-53 odds

39 Closure Journal Entry: When using integration by parts on a high degree function, would you rather repeat integration by parts, or use tabular integration? Why? If you had to explain a problem to another student, which technique would you use? HW: Study for quiz Monday


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