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roselin

  • 3 years ago

write the function in the form y=f(u) and u=g(x). then find the dy/dx as a function of x. y= 5cos^-4 x

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  1. RadEn
    • 3 years ago
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    first, let u = -4x du/dx = ....

  2. roselin
    • 3 years ago
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    okay

  3. roselin
    • 3 years ago
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    -4

  4. RadEn
    • 3 years ago
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    sorry... i didnt see ur question well it should be |dw:1354847698924:dw|

  5. roselin
    • 3 years ago
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    okay..

  6. RadEn
    • 3 years ago
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    next, |dw:1354848159596:dw|

  7. RadEn
    • 3 years ago
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    dy/dx = du/dx * dy/du , actually it's called chain's rule

  8. roselin
    • 3 years ago
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    yeah, thanks a lot. i have one more question, would you be willing to help me with me? i am kind of confused.

  9. RadEn
    • 3 years ago
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    close ur question, n post it in new question

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