1 Chapter 7 Integral Calculus The basic concepts of differential calculus were covered in the preceding chapter. This chapter will be devoted to integral.

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Presentation transcript:

1 Chapter 7 Integral Calculus The basic concepts of differential calculus were covered in the preceding chapter. This chapter will be devoted to integral calculus, which is the other broad area of calculus. The next chapter will be devoted to how both differential and integral calculus manipulations can be performed with MATLAB.

2 Anti-Derivatives An anti-derivative of a function f(x) is a new function F(x) such that

3 Indefinite and Definite Integrals Indefinite Definite

4 Definite Integral as Area Under the Curve

5 Exact Area as Definite Integral

6 Definite Integral with Variable Upper Limit More “proper” form with “dummy” variable

7 Area Under a Straight-Line Segment

8 Example 7-1. Determine

9 Example 7-1. Continuation.

10 Example 7-2. Determine

11 Guidelines 1. If y is a non-zero constant, integral is either increasing or decreasing linearly. 2. If segment is triangular, integral is increasing or decreasing as a parabola. 3. If y=0, integral remains at previous level. 4. Integral moves up or down from previous level; i.e., no sudden jumps. 5. Beginning and end points are good reference levels.

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13 Tabulation of Integrals

14 Table 7-1. Common Integrals.

15 Table 7-1. Continuation.

16 In Examples 7-3 through 7-5 that follow, determine the following integral in each case:

17 Example 7-3

18 Example 7-4

19 Example 7-5

20 In Examples 7-6 and 7-7 that follow, determine the definite integral in each case as defined below.

21 Example 7-6

22 Example 7-7

23 Displacement, Velocity, and Acceleration

24 Displacement, Velocity, and Acceleration Continuation

25 Alternate Formulation in Terms of Definite Integrals

26 Example 7-8. An object experiences acceleration as given by Determine the velocity and displacement.

27 Example 7-8. Continuation.

28 Example 7-8. Continuation.

29 Example 7-9. Rework previous example using definite integral forms.

30 Example Plot the three functions of the preceding examples.

31 Example Continuation. >> t = 0:0.02:2; >> a = 20*exp(-2*t); >> v = *exp(-2*t); >> y = 10*t + 5*exp(-2*t) - 5; >> plot(t, a, t, v, t, y) The plots are shown on the next slide.

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