Integration Question (1 Viewer)

Grinchey · Feb 1, 2015

Here is there question:

The answer is pi = 3.14 units squared.

Can someone show me a worked solution?

InteGrand · Feb 1, 2015

The curve cuts the x-axis at x = -2, so the area is given by

$A = \int_{-2}^{7} \sqrt{x+2} $ d$x$

$= \frac{2}{3}\left [ (x+2)^{\frac{3}{2}} \right ]^7 _{-2}$

$= \frac{2}{3}\left [ 9^{\frac{3}{2}} - 0 \right ]$

$= \frac{2}{3}\times 27$

$= 18 \text{ square units}$ .

Integration Question (1 Viewer)

Grinchey

Member

InteGrand

Well-Known Member

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