Resolved: "the notation ( f + g ) −..." - Plainmath

Reese Estes

Answered question

2022-04-07

the notation

(f + g)^{- 1}

for the inverse function

Answer & Explanation

gudstrufy47j

Beginner2022-04-08Added 16 answers

If h is an invertible function, then

h^{- 1}

can be used to denote its inverse. In particular, we can take

h = f + g

here. It is not relevant if

f

or

g

are invertible.
In a similar way, we write

\frac{1}{1 + 0} = 1

, even though

\frac{1}{0}

is undefined in the real numbers!

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