Finding The Inverse Of A Function
By DarthVader
Date: 2022-10-10
Topic: 162 see comments
Post views: 969
Finding The Inverse Of A Function
In order to find the inverse of a function f(x), set f(x) equal to ‘y’, then solve the equation for x:
For example:
f(x) = 2x + 1
To find the inverse of this function, first set f(x) as the variable y:
y = 2x + 1
Now solve the equation for x:
x = (y + 1) / 2
So the inverse function of f(x) = 2x + 1 is:
f-1(x) = (x + 1) / 2
Functions With No Inverse
If a function has more than one possible value for ‘x’ at any ‘y’ point, then it has no inverse.
E.G. if any value of y produces two or more values of x then it has no inverse function.
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