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anonymous

  • 4 years ago

Let y= 3 t^5 - 3. Find D, E, and F so that (d^2 y)/(d t^2) = Dt^E +F

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  1. anonymous
    • 4 years ago
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    D=60 F=0

  2. campbell_st
    • 4 years ago
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    Differentiate \[f'(t) = 15t^4 \] \[f"(t) = 60t^3\] D = 60, E = 3 and F = 0

  3. anonymous
    • 4 years ago
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    what if its (dy)/(dt)|_(t = 2) =

  4. anonymous
    • 4 years ago
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    15*2^4

  5. anonymous
    • 4 years ago
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    so it would be 240?

  6. anonymous
    • 4 years ago
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    Yes

  7. anonymous
    • 4 years ago
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    if so how could I find the 2nd deriv? from 240

  8. campbell_st
    • 4 years ago
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    you can't find the 2nd derivative.... in terms of t before doing anything

  9. anonymous
    • 4 years ago
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    so I would have to go back and plug 2 into the 2nd deriv equation?

  10. anonymous
    • 4 years ago
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    for t

  11. anonymous
    • 4 years ago
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    Yeah

  12. anonymous
    • 4 years ago
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    ok thanx

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