AP Calc Unit 4: Riemann Sums
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7 Terms
1
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Equal subinterval formula
b-a/n
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Left
Skip last value in table
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Right
Skip 1st value in table
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How to find the overestimate and underestimate for left and right Riemann sums?
By identifying if f(x) is increasing or decreasing
Draw curve down if decreasing, and up if increasing
Place 2 points on graph
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Trapezoidal formula
½h(b1 + b2)
6
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How to find the over/under estimate for trapezoidal Riemann sums?
-Concavity
-F(x) is ccu when f’(x) is increasing and vice versa
-Slope on table: difference between f(x) values/difference between x values
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Midpoint Riemann sums
Use middle value in f(x) section of table
Note 
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