Numerical Integration

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Trapezoidal Rule: Example • <strong>Numerical</strong>ly integrate: f ( x ) = 0.2 + 25x − 200x + 675x 2 3 − 900x 4 + 400x 5 a = 0, b = 0.8 (Analytical answer = 1.6405333) © 2003-2006 Roberto Muscedere 6
Trapezoidal Rule: Example f (0) = 0.2 f (0.8) = 0.232 I ≅ 0.2 0.232 ⎞ 0 .8 ⎜ ⎛ + ⎟ = ⎝ 2 ⎠ 0.1728 • Significant difference from analytical solution of 1.6405333 © 2003-2006 Roberto Muscedere 7
Page 1 and 2: Numerical Integration • Newton-Co
Page 3 and 4: Trapezoidal Rule • Trapezoidal Ru
Page 5: Trapezoidal Rule • Same result if
Page 9 and 10: Trapezoidal Rule • Add a series o
Page 11 and 12: • Grouping the terms: Trapezoidal
Page 13 and 14: Trapezoidal Rule: Example f (0) = 0
Page 15 and 16: Trapezoidal Code (p.2) double Integ
Page 17 and 18: Trapezoidal Code -Output n=1, I=0.1
Page 19 and 20: Simpson’s 1/3 Rule ( x − x1 )(
Page 21 and 22: Simpson’s 1/3 Rule: Example • N
Page 23 and 24: Simpson’s 1/3 Rule • Add a seri
Page 25 and 26: Simpson’s 1/3 Rule • Grouping t
Page 27 and 28: I f Simpson’s 1/3 Rule: Example (
Page 29 and 30: Simpson’s 1/3 Code (p.2) double I
Page 31 and 32: Simpson’s 1/3 Code (p.4) double F

Numerical Integration

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