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26-11-2015
Mathematics

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what is the inverse of the function f(x)=1/4x-12

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Panoyin Panoyin

27-11-2015

         f(x) = ¹/₄x - 12
       y = ¹/₄x - 12
       x = ¹/₄y - 12
       x + 12 = ¹/₄y
     4(x + 12) = 4(¹/₄y)
4(x) + 4(12) = y
      4x + 48 = y
      4x + 48 = f⁻¹(x)

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