Asked by India
make x the subject of the formula
y=2x+3
x-4
hence determine the inverse of f(x) for the equation where x is not equal to 4
y=2x+3
x-4
hence determine the inverse of f(x) for the equation where x is not equal to 4
Answers
Answered by
Steve
I presume you mean
y = (2x+3)/(x-4)
In that case,
xy-4y = 2x+3
x(y-2) = 4y+3
x = (4y+3)/(y-2)
so, f<sup>-1</sup>(x) = (4x+3)/(x-2)
y = (2x+3)/(x-4)
In that case,
xy-4y = 2x+3
x(y-2) = 4y+3
x = (4y+3)/(y-2)
so, f<sup>-1</sup>(x) = (4x+3)/(x-2)
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