Question: Work through the following steps to evaluate 1 8 ( x 2 + 2 x + 4 ) d x . a) We know that
Work through the following steps to evaluate18(x2+2x+4)dx.
a) We know that a = and b =
b) Using n subintervals, x =
c) Assume that the sample points in each interval are right endpoints. Find the following sample points: x1= x2= x3=
In general, the ith sample point is x1= Note: your answer will be an expression in terms of i and n. d) Now find the sum of the areas of n approximating rectangles. Note: your answer will be an expression in terms of n.
i=1nf(xi)x=
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