Question: The square root function r(x) can be defined as: r(x) = x where means plus or minus, since every positive number has two square roots

The square root functionr(x)can be defined as:

r(x) = x

where means "plus or minus", since every positive number has two square roots (for instance the square root of 9 iseither+3 or -3.

Isr(x)a function?

write explanation please

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