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farmergirl411

  • one year ago

Can someone please tell me what they get to this problem Find the derivative of the function j(x)=square root x^10-x^8

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  1. inkyvoyd
    • one year ago
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    If you say what you got first :)

  2. farmergirl411
    • one year ago
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    ok I got\[\frac{ 5x^9-4x^7 }{ (x ^{10}-x^8)\frac{ 3 }{ 2 }}\]

  3. farmergirl411
    • one year ago
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    that is supposed to be raised to 3/2 sorry

  4. farmergirl411
    • one year ago
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    is that what you got?

  5. amistre64
    • one year ago
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    \[D_u[\sqrt{u}]=\frac{u'}{2\sqrt{u}}\]

  6. farmergirl411
    • one year ago
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    you mean the answer should be \[\frac{ 1 }{ 2\sqrt{10x^9-8x^7} }\]

  7. amistre64
    • one year ago
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    no

  8. amistre64
    • one year ago
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    your answer was almost correct, the 3/2 should have been 1/2 to indicate a sqrt

  9. farmergirl411
    • one year ago
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    ok your saing that the answer I posted previously was correct but the denominator needs to be square rooted

  10. amistre64
    • one year ago
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    yes, .. or another way to write a sqrt is with an exponent of 1/2 .... not 3/2

  11. farmergirl411
    • one year ago
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    ok gotcha thanks

  12. amistre64
    • one year ago
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    youre welcome

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