Question

find the range of real function f(x)=√2-x

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Answer 1

Step-by-step explanation:

As the function contains roots, all the real values will either be equal to zero or greater than zero.

So, range should [0,∞)

Square roots of negative number doesnt exist. So number under root must be greater or equal to 0.

→ 2 - x ≥ 0

Hence,

y will be any real number greater or equal to 0.

Range is [0,∞)