The functionary f is such that f(x)=7x-6 a)work out the value of f(4) b)hence, or otherwise,work out the value of f^-1(22)

asked Nov 13, 2023 41.9k views

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the functionary f is such that f(x)=7x-6 a)work out the value of f(4) b)hence, or otherwise,work out the value of f^-1(22)

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Answer:

Explanation:

a) f(4)=7(4)-6=22.

b) This is equal to 4. Since
$f^(-1)(x)=y \implies f(y)=x$ , we get that since f(4)=22,
f^(-1)(22)=4 .

Bttomio answered Nov 18, 2023