Homework Help: math question 2- very urgent !

Posted by Carla on Sunday, December 19, 2010 at 11:13pm.

Given f (x) = √(7 + x) + 4 . Use the rectangle method to approximate the area on the interval [0, 8] using 4
rectangles. (Assume the graph goes through the midpoint of each rectangle.)

math question 2- very urgent ! - TutorCat, Monday, December 20, 2010 at 3:14am
(sigma)M = (b-a) f((a+b)/2)
width:
(b-a)=2-0
(b-a)=4-2
(b-a)=6-4
(b-a)=8-6 =2
find the height:
f((a+b)/2)
(e.g. ([√(7 + a) + 4] + [√(7 + b) + 4])/2)

take the sum of "rectangles" (i.e. product of width and height)

rectangle method:
http://spiff.rit.edu/classes/phys317/lectures/num_integ2/num_integ2.html

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