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stottrupbailey

  • 2 years ago

If f(t)=8sec^2t-7t^2, find the antiderivative F(t). Then, if F(0)=0, find what F(1.2) would equal

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  1. stottrupbailey
    • 2 years ago
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    So for my antiderivative I got, \[8\tan(t)-\frac{ 7 }{ 3 }t^3+C\]

  2. stottrupbailey
    • 2 years ago
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    but for some reason I'm not getting the right answer for F(1.2)

  3. stottrupbailey
    • 2 years ago
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    I found that since F(0)=0, then that must mean C=0. And then I pluged in 1.2 for the t's in the antiderivative and got -4.032 but the webwork says my answer's wrong, so I'm confused

  4. stottrupbailey
    • 2 years ago
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    are you still there Mark?

  5. mark_o.
    • 2 years ago
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    yeah seems you did good but in you calculator did you set up in radian mode

  6. mark_o.
    • 2 years ago
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    did you get -15.45 ?

  7. stottrupbailey
    • 2 years ago
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    yes, I did. So I'm not sure what the issue is. No, I didn't get that. I got -4. something

  8. stottrupbailey
    • 2 years ago
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    I typed your answer in and it said it's wrong

  9. mark_o.
    • 2 years ago
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    im sorry its 15.45

  10. stottrupbailey
    • 2 years ago
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    Yeah, that worked. Thanks!

  11. mark_o.
    • 2 years ago
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    ok yw, have fun :D

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