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Licemer1 [7]
2 years ago
8

Proof that an invertible function f can have only one inverse

Mathematics
1 answer:
True [87]2 years ago
8 0

Step-by-step explanation:

We remeber that If we compose a function and it's inverse,

f(f {}^{ - 1} x) = x

A invertible function is one to one so suppose that we have two inverse, g(x) and h(x). Let plug them in ,

f(h(x)

and

f(g(x)

Since f is a invertible function, it is one to one so if g and h are both inverse of f, then they are eqaul

f(h(x) = f(g(x)

h(x) = g(x)

Thus, a invertible function can have only one inverse.

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