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jaersyn Group Title

What is the derivative of: (secu)^(n-2)? Is it (n-2)(secu)^(n-3) tanu?

  • one year ago
  • one year ago

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  1. jaersyn Group Title
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    n is an integer

    • one year ago
  2. hsmt Group Title
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    hi. oh, ok

    • one year ago
  3. hsmt Group Title
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    what about u?

    • one year ago
  4. jaersyn Group Title
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    just a variable

    • one year ago
  5. hsmt Group Title
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    not a function of x?

    • one year ago
  6. hsmt Group Title
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    ok, u is not a function of x, then i think you are gonna want to check the exponent of sec u

    • one year ago
  7. hsmt Group Title
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    still there?

    • one year ago
  8. jaersyn Group Title
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    yeah

    • one year ago
  9. jaersyn Group Title
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    i got it

    • one year ago
  10. hsmt Group Title
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    in case you get this, everything looks ok except the exponent on sec u. the n-2 out front is good, the sec^(n-3) times the sec u tan u (chain rule) is what is affecting the exponent

    • one year ago
  11. hsmt Group Title
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    do you see what the exponent is now for sec u?

    • one year ago
  12. jaersyn Group Title
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    it's n-3 no?

    • one year ago
  13. hsmt Group Title
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    the n-2 in front is correct. you also have product of secu^(n-3) and then there is the chain rule that multiplies by secutanu. so, it is not n-3

    • one year ago
  14. hsmt Group Title
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    do you see what i am trying to point out? feel free to ask any questions

    • one year ago
  15. hsmt Group Title
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    are you still having difficulty?

    • one year ago
  16. jaersyn Group Title
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    oh pellet

    • one year ago
  17. jaersyn Group Title
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    you are correct

    • one year ago
  18. jaersyn Group Title
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    it would still be sec^(n-2)

    • one year ago
  19. hsmt Group Title
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    niiice

    • one year ago
  20. jaersyn Group Title
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    (n-2)(secu)^(n-3) times secutanu which equals (n-2)(secu)^(n-2) times tanu

    • one year ago
  21. hsmt Group Title
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    very cool you got it

    • one year ago
  22. jaersyn Group Title
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    now i have to rewrite this wholeeeeeeeeeee thing......... thanks

    • one year ago
  23. hsmt Group Title
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    dontcha just hate the whole rewriting thing? If there is nothing else i can help with, i will bid you adieu

    • one year ago
  24. hsmt Group Title
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    take care

    • one year ago
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