Evaluate ([cos (x – y)sin(x+ y)dA, where R is the triangle with vertices (0,0), R (-1,7), and (7,7) using the change of variables u = x – y and v=x+y.

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Q: Let x=x= and y=y= Find the dot product of xx and yy.     x⋅y=x⋅y

A: Given:x=9, 0y=-4, -2Dot product:A=ax ,ay  B=bx ,byAB=axbx,+ay,by

Q: (9, - 플이 2

A: Given, the  point (r, θ, z)=(9, -π2, 8).

Q: Determine the values of y such that D(9,3,-2), E(3,4,7) and F(21,y,-20) are collinear

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Q: What is the image of point G(18, 71) after a half-turn centered at Y(20, 21)?  Give a reason for…

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Q: Find the point P such that v = PQ has the components (-7.75, –8.25, – 16). О 3D (-2.75, -2.25, -6) P…

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Q: Evaluate eリ+1 dA D where D is the triangle with vertices (0,0), (-1, 3), and (6, 2).

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Q: Find polar coordinates (r, 0) of the point (-2√2, 2√2), where r <0 and 0 ≤6 a. 5 *(-2√2. ST) 3 b. 2π…

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Q: Let C denote the rectangle with vertices (0,-2), (0, 2), (2,-2), and (2, 2), oriented…

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