Mathematics
30.12.2022 12:49
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In evaluating a double integral over a region D, a sum of iterated integrals was

In evaluating a double integral over a region D, a sum of iterated integrals was obtained as follows: ∬Df(x,y)dA=∫5_0∫(2/5)y_0 f(x,y)dxdy+∫7_5∫(7−y)_0 f(x,y)dxdy.
Sketch the region D and express the double integral as an iterated integral with reversed order of integration.
∫b_a∫g2(x)_g1(x) f(x,y)dydx
a= b=
g1(x)= g2(x)=
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gracye
gracye
4,8(31 marks)

Step-by-step explanation:

a + c = 1000

9a + 5c = 6680

9a + 9c = 9000

9a+ 5c = 6680

4c         = 2320

c           = 580

a+ 580 = 1000

a = 420

A = 420

C = 580

If you substitute the numbers into 9a + 5c = 6680, that should give you the right answer.

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