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ErikaS7494
28.11.2019 •
Mathematics
Find the average value of f over the given rectangle. f(x, y) = 2x2y, r has vertices (−2, 0), (−2, 5), (2, 5), (2, 0).
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Ответ:
average is 0
Step-by-step explanation:
I insert each x and y corresponding value into the f(x,y) equation and got:
0
40
-40
0
and then I found the average by adding them up and dividing but the amount of numbers:
0/4 = 0
This is kind of a strange answer so if you made a mistake writing something please message me and I can redo this problem.
Ответ:
That is because the general expression of a circle with the center at the origin of the coordinate system is x^2 + y^2 = (radius)^2
Then in your expression z = (radius)^2, and the radius is found by taking square root>
√(radius)^2 = √z
=>radius = √z