If f(x)=(6x-5)/(5x-6). Prove that f(y)=x, x is not equal to 6/5
Answers
Answered by
1
Solution:
If y = 6x - 5 \ ( 5x -6),
f(y) = x , x equal to 6\5
Hope it helps u !
Answered by
0
Answer:
y=f(x)=
5x−6
6x−5
f(y)=f(f(x))=
5(
5x−6
6x−5
)−6
6(
5x−6
6x−5
)−5
=
5(6x−5)−6(5x−6)
6(6x−5)−5(5x−6)
=
30x−25−30x+36
36x−30−25x+30
=
9
9x
f(y)=x
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