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01-11-2019
Mathematics

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what is the inverse of the function " f(x) = 2x+12 / 5

what is the inverse of the function fx 2x12 5 class=

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Аноним Аноним

01-11-2019

Answer:

B. f-1(x) = (5/2) x - 6.

Step-by-step explanation:

f(x) = (2x + 12) / 5

5 f(x) = 2x + 12

2x = 5 f(x) - 12

x = (5 f(x) - 12) / 2 ow replace the x by f-1(x) and f(x) by x:

f-1(x) = ( 5x - 12)/ 2

f-1(x) = (5/2) x - 6.

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