ashleyngamble ashleyngamble

24-01-2019
Mathematics

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which is the inverse of the function f(x)= x+3
A. h(x)= 1/3x+3
B. h(x)= 1/3x-3
C. h(x)=x-3
D. h(x)= x+3

Respuesta :

25-01-2019

answer is C
[tex]let \: y \: = x + 3[/tex]
[tex]make \: x \: subject \: of \: the \: formula[/tex]
[tex]x = y - 3[/tex]

replace x with y above
[tex]f {}^{ - 1} = x - 3[/tex]

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