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jaybuck2509
20.09.2020 •
Mathematics
Please can someone answer this for me, ive asked so many questions on here and they never get answered, I need the help rn this is like the last thing I can think of
Given f(x) = ax – b, what is f-1(x)?
A) x - b a
B) x + b a
C) 1 ax - b
D) 1 ax + b
Solved
Show answers
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Ответ:
D
Step-by-step explanation:
So we have the function:
And we want to find its inverse.
To find the inverse of a function, we need to: 1) change f(x) and x, 2) change f(x) to f⁻¹(x), and 3) solve for f⁻¹(x) for the inverse.
So, flip f(x) and x:
Change:
Solve. Add b to both sides. The right side cancels:
Divide both sides by a:
So, our answer is D.
Ответ: