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Doug Ray

Apparently, this user prefers to keep an air of mystery about them.

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  • Member for 5 years
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  • Last seen Dec 31 '20 at 1:54

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2 Help finding $\lim_{x \to \infty} {(1 + e^x)}^{e^{-x}}$ Mar 14 '16
2 Sketch the heart and indicate its orientation with arrows $ r = 1 - \cos(\theta)$. Find the area enclosed by the heart May 19 '16
2 Determine whether T: $ R^3 \to R^2 $ defined as $T(x,y,z) = (x, x+y+z)$ is a linear transformation under euclidean operations in $R^3 $and $R^2$ Dec 4 '16
2 Solve line integral using Green's thereom Dec 10 '17
2 Find the line through $P = (2,4,7) $ that intersects and is perpendicular to the line : $x = -1 + t, y = -2 + 3t, z = 4 $ Sep 20 '18
1 Sketch the solid of integration Q. Nov 13 '17
1 Find the area of the part of plane $ z = y + 1$ which is inside cylinder $x^2 + y^2 = 1$, $z$ is free Nov 3 '17
1 Use Polar Coordinates to evaluate $\int_{-4}^4\int_0^{\sqrt{16-x^2}} e^{-(x^2+y^2)}$ Apr 18 '17
1 Find the Saddle Points of $f(x,y) = x^3 +3xy^2-3x^2-3y^2+4$ Apr 18 '17
1 Use Green's theorem to evaluate $\oint_c$ sketch the region R Dec 9 '17
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