Posted by Christiana on Wednesday, May 25, 2011 at 6:09pm.
Use the limit process to find the area of the region between f (x)=10x+8 and the xaxis on the interval [0,3]

Math  MathMate, Thursday, May 26, 2011 at 4:19pm
Subdivide the area into n vertical rectangles, each of width
w=(30)/n.
The (x)position of the ith rectangle is x(i)=(i1)(3/n)=3(i1)/n.
The height is
h(i)=10x(i)+8
The area is
a(i)=w*h(i)
The total area is therefore A
n
∑ a(i)
i=1
Evaluate the summation and calculate the area A by taking limit n → ∞.
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