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agentx5

  • 3 years ago

Find the error in my steps? Q: x = 4 + te\(^t\), y = (t\(^2\) + 1)e\(^t\), 0 ≤ t ≤ 3 Set up an integral that represents the area of the surface obtained by rotating the given curve about the X-axis. Now to post my work...

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  1. agentx5
    • 3 years ago
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    It's #6

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  2. mahmit2012
    • 3 years ago
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    |dw:1342035220350:dw|

  3. mahmit2012
    • 3 years ago
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    I solved it before so look at that my answer was right in there.

  4. agentx5
    • 3 years ago
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    Ack... Let me see where that line is and what I subsituted

  5. agentx5
    • 3 years ago
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    Wait what? No that's not incorrect what I wrote @mahmit2012 , I just divided both sides by dt before I made the subsitution

  6. agentx5
    • 3 years ago
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    I replaced \(\large\frac{dx}{dt}\) with te\(^t\)

  7. mahmit2012
    • 3 years ago
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    |dw:1342035678669:dw|

  8. mahmit2012
    • 3 years ago
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    |dw:1342035759311:dw|

  9. agentx5
    • 3 years ago
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    Ah the definite integral gives the correct value I need now! Well done!

  10. agentx5
    • 3 years ago
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    I was missing a term I seems

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