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torisob [31]
3 years ago
5

Find the inverse of f(x)=2x+1

Mathematics
2 answers:
satela [25.4K]3 years ago
5 0

Answer:

h(x) = \frac{x-1}{2}

Step-by-step explanation:

The inverse function is the function which when plugged in to the original one yields the argument (x).

Knowing this we do the following, let h(x) be the inverse function of f:

f(x)=2x+1 \ \ \ \ f(h(x)) = 2(h(x)) + 1 = x\\h(x) = \frac{x-1}{2}\\Now \ we \ verify \ if \ it \ yields \ x.\\f(h(x)) = f(\frac{x-1}{2}) = 2(\frac{x-1}{2}) + 1 = x -1 + 1 = x\\Thus \ h(x) \ is \ the \ inverse\ function \ of \ f

Lilit [14]3 years ago
3 0

Answer:

y=0.5(x-1)

Step-by-step explanation:

To find the inverse of a function, you have to substitute yfor x in the equation and simplify to get a normal equation again. In this case, f(x) is y.

y=2x+1

x=2y+1

2y+1=x

2y=x−1

y=0.5(x−1)

So there you have it.

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Please check the explanation.

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