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SOVA2 [1]
3 years ago
15

Select the correct answer. For which function is f(x) not equal to f -1(x)?

Mathematics
2 answers:
Leya [2.2K]3 years ago
7 0
A is the answer for which function f(x) is t equal to f -1(x)
sleet_krkn [62]3 years ago
5 0

A.

f(x)= 2-x

let us find f⁻¹(x)

let us say f(x)=y

y=2-x

now we switch x as y and y as x

x=2-y

solve for y

y=2-x

f⁻¹(x)=2-x

so here f(x) and f⁻¹(x) are same

B.

f(x)=-x

let us find f⁻¹(x)

let us say f(x)=y

y=-x

now we switch x as y and y as x

x=-y

solve for y

y=-x

f⁻¹(x)=-x

so here f(x) and f⁻¹(x) are same

C.

f(x)=2x

let us find f⁻¹(x)

let us say f(x)=y

y=2x

now we switch x as y and y as x

x=2y

solve for y

y=x/2

f⁻¹(x)=x/2

so here f(x) and f⁻¹(x) are not same

D.

f(x) =2/x

let us find f⁻¹(x)

let us say f(x)=y

y=2/x

now we switch x as y and y as x

x=2/y

solve for y

y=2/x

f⁻¹(x)=2/x

so here f(x) and f⁻¹(x) are same

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If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

Check

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