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anonymous

  • one year ago

y=(1-x)/(1+x) at (-2,-3) i suppose to find equation at tangent line the answer i got is y=-2x-7

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  1. idku
    • one year ago
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    Sure, did you get the derivative? Don't use quotient tho

  2. anonymous
    • one year ago
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    but my professor answers are all positive

  3. anonymous
    • one year ago
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    yes

  4. anonymous
    • one year ago
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    his answer is 2x+y+7=0

  5. idku
    • one year ago
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    (1-x)/(1+x) = (-x+1)/(x+1)= (-x-1+2)/(x+1)=(-x-1)/(x+1) + 2/(x+1) = -1 + 2/(x+1)

  6. anonymous
    • one year ago
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    i'm thinking he wrote it in implicit form and changed everything arounf

  7. hartnn
    • one year ago
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    y = -2x-7 is same as 2x+y+7 = 0

  8. hartnn
    • one year ago
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    so you and your prof, both are correct

  9. anonymous
    • one year ago
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    ok

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spraguer (Moderator)
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