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gtharp

  • 3 years ago

If f(x) = [ 4 tanx / x ], find f′( x ).

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  1. fungsiufung
    • 3 years ago
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    \[f(x)=\frac{4tanx}{x} => f'(x)=\frac{ x(4tanx)'-4tanx(x)' }{ (x)^2 }=\frac{ 4xsec ^2 x-4\tan x }{x^2 }\]

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