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find the area bounded by the curves y^2=2x+6 and x=y+1
8 years ago

Answers

Steve
The curves intersect at (-1,-2) and (5,4)

Horizontal strips of width dy are the best here, so

A = ∫[-2,4] (y+1)-(y^2-6)/2 dy = 18

Using vertical strips is a bit trickier, because the boundary changes at x = -1

A = ∫[-3,-1] √(2x+6) - (-√(2x+6)) dx
+ ∫[-1,5] √(2x+6)-(x-1) dx
= 38/3 + 16/3 = 54/3 = 18
8 years ago
Ke$ha
Thank you!
8 years ago

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