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KIM [24]
4 years ago
7

Use Green's Theorem to evaluate the line integral along the given positively oriented curve.

Mathematics
1 answer:
Vlad [161]4 years ago
6 0

By Green's theorem, the line integral is equivalent to the area integral

\displaystyle\int_C(3y+7e^{\sqrt x})\,\mathrm dx+(8x+9\cos(y^2))\,\mathrm dy=\int_0^1\int_{x^2}^{\sqrt x}\frac{\partial(8x+9\cos(y^2))}{\partial x}-\frac{\partial(3y+7e^{\sqrt x})}{\partial y}\,\mathrm dy\,\mathrm dx

=\displaystyle5\int_0^1\int_{x^2}^{\sqrt x}\mathrm dy\,\mathrm dx=\boxed{\frac53}

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