A function f is defined by f: x= 8 – 3x. Find the inverse function f-'(x). Hence evaluate f-'(9),f-'(-12), f-3 1/3 and f-13/16.
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Answer:
F(9)=8-3*9=8-27=(-19)
F(-12)=8-3*(-12)=8+36=44
F(1/3)=8-3*1/3=8-1=7
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