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31-07-2016
Mathematics

contestada

If f(x) = 7x – 12, what is f–1(x) ?

) x-12 / 7
2) x+12 / 7
3) x+7 / 12
4) x-7 / 12

Respuesta :

nobillionaireNobley nobillionaireNobley

31-07-2016

Let y = 7x - 12
7x = y + 12
x = (y + 12)/7

Therefore, f^-1(x) = (x + 12)/7

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