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The Definite Integral

The Definite Integral. Section 14.3. Definite integral. As the number of integrals increase while doing the Riemann sum, the answer becomes more accurate. The limit of the Riemann Sum is called the definite integral of f from a to b, written:. Example 1.

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The Definite Integral

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  1. The Definite Integral Section 14.3

  2. Definite integral • As the number of integrals increase while doing the Riemann sum, the answer becomes more accurate. The limit of the Riemann Sum is called the definite integral of f from a to b, written:

  3. Example 1 • Use integral notation to express the area of the region bounded by the x-axis, the graph of g(x) = 5x5 – 3x4 and the lines x = 10 and x = 25

  4. Example 2 • Find the exact value of Draw a picture!

  5. Trapezoid with A = ½ (b1 + b2)h • A = ½ (f(3) + f(12))∙ 9 • f(12) = 97, f(3) = 43

  6. The Anti-derivative • This is exactly the opposite of the derivative. We have to ask ourselves, what number will give us this derivative.

  7. Try some others! a. b.

  8. Once we find the anti-derivative.. Evaluateitat the upper and lowerbound. Then, subtract!

  9. Back to example 2! • Find the exact value of

  10. Example 3 • Find the exact value of

  11. Example 4 • Calculate: • This one is a little harder to integrate, so draw a picture!

  12. Example 4 ¼ (10 * 50) π 125 π

  13. Homework Pages 831 – 832 3 – 14 #10 is extra credit

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