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spndsh Group Title

d/dt (a(t-sint)i-hat + a(1-cost)j-hat)

  • one year ago
  • one year ago

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  1. Ahaanomegas Group Title
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    You need to differentiate each component of the original vector to get the components of the differentiated vector.

    • one year ago
  2. spndsh Group Title
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    |dw:1349560630436:dw| is this right?

    • one year ago
  3. Ahaanomegas Group Title
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    No. 1. You forgot to multiply by the constant a. 2. The derivative of sin is cos, not -cos. Try again! :)

    • one year ago
  4. spndsh Group Title
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    a(1+cos t) + sint

    • one year ago
  5. spndsh Group Title
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    its -sint

    • one year ago
  6. Ahaanomegas Group Title
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    Nope. Again: 1. You need to write it as a vector. 2. You forgot the a on the y-component (j-hat). Try again! Don't get discouraged. This takes time to fully understand. ;)

    • one year ago
  7. Ahaanomegas Group Title
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    Try writing it as (at - a sin t, a - a cos t). It makes it easier for me. Try that for yourself!

    • one year ago
  8. spndsh Group Title
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    |dw:1349561042586:dw| what about this?

    • one year ago
  9. Ahaanomegas Group Title
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    There you go! Good job. :)

    • one year ago
  10. spndsh Group Title
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    thanks so much!

    • one year ago
  11. Ahaanomegas Group Title
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    No problem! Do you see the general method of this so that you can do similar problems in the future?

    • one year ago
  12. Ahaanomegas Group Title
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    By the way, you're a good learner, @spndsh (!!!)

    • one year ago
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