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anonymous
 one year ago
Use left and right endpoints and the given number of rectangles to find two approximations of the area of the region between the graph of the function and the xaxis over the given interval.
g(x) = 2x2 − x − 1, [3, 5], 4 rectangles
anonymous
 one year ago
Use left and right endpoints and the given number of rectangles to find two approximations of the area of the region between the graph of the function and the xaxis over the given interval. g(x) = 2x2 − x − 1, [3, 5], 4 rectangles

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jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1how far did you get?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1can you show me what steps you have so I can see where you went wrong

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1how did you get the `5+6+7+8` ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0that's what it told me to do in the problem before

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1maybe you were thinking of f(3) + f(3.5) + ... ??

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1let's draw out the graph

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1dw:1442286116197:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1here is f(x) dw:1442286125598:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1dw:1442286156489:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1divide the interval from 3 to 5 into four pieces dw:1442286172862:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1the left rectangle approximation will look like this dw:1442286205016:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1agreed so far?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1ok so you have the delta x part correct that is delta x = (ba)/n delta x = (53)/4 delta x = 2/4 delta x = 1/2 delta x = 0.5 this is the width of each rectangle dw:1442286351913:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1you can factor out the delta x terms which is what you have on your paper the heights of each rectangle is based on f(x) the first rectangle has a height of f(3) dw:1442286417246:dw