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kittycat01 Group Title

need help in calculus http://www.wolframalpha.com/widget/widgetPopup.jsp?p=v&id=f4ccdf86d504bc91f8652fa6d7b76db6&title=Derivative%20Calculator&theme=blue&i0=1st&i1=tan^-1%28%28a%2Bx%29%2F%281-ax%29%29&podSelect=&includepodid=Input&podstate=Input__Step-by-step%20solution&showAssumptions=1&showWarnings=1 tan^-1((a+x)/(1-ax)) using substitution method differentiate it :'( what should i substitute to get the answer ?????

  • one year ago
  • one year ago

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  1. kittycat01 Group Title
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    i think i have to subtitute x with acos2theta

    • one year ago
  2. kittycat01 Group Title
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    *phew* finally done it :)

    • one year ago
  3. hartnn Group Title
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    try x= a than y

    • one year ago
  4. hartnn Group Title
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    oh! how did u do it ?

    • one year ago
  5. kittycat01 Group Title
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    lol @hartnn there is a formula tan^-1 x+ tan^-y = (x+y)/(1-xy)

    • one year ago
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