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credmond

  • one year ago

Calculate the double integral ∫ ∫ (2x+10y+20) dA where R is the region 0<=x<=5, 0<=y<=1

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  1. Loser66
    • one year ago
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    Where are you stuck?

  2. credmond
    • one year ago
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    |dw:1443489034160:dw|

  3. credmond
    • one year ago
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    Did I set this up right?

  4. Loser66
    • one year ago
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    Yes, let me make it clearer \[\int_0^1\int_0^5( 2x+10y+20)dxdy\]

  5. Loser66
    • one year ago
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    and you are correct, go ahead.

  6. credmond
    • one year ago
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    Okay so from here, I plug in 1 and 0 into the equation, right?

  7. Loser66
    • one year ago
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    Not yet, you must replace the limits in, then take second integral

  8. Loser66
    • one year ago
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    |dw:1443489600801:dw|

  9. credmond
    • one year ago
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    Oh, okay!

  10. credmond
    • one year ago
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    Soooo is it

  11. credmond
    • one year ago
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    |dw:1443490041700:dw|

  12. Loser66
    • one year ago
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    |dw:1443490129263:dw|

  13. Loser66
    • one year ago
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    ok? it is dy, not dx. you had done with dx

  14. credmond
    • one year ago
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    Oh right! Whoops!

  15. credmond
    • one year ago
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    So then, from here, solve with 1 & 0?

  16. Loser66
    • one year ago
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    Take integral first.

  17. credmond
    • one year ago
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    OOOOOH. I get this now.

  18. Loser66
    • one year ago
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    good, show your result, please

  19. credmond
    • one year ago
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    Is it 150?

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