kitsune0724
F(x)=sqrt X
How do I find domain and range? Please and Thank you.
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kitsune0724
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\[f(x)equals \sqrt{x}\]
waterineyes
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For Domain of Square root numbers always remember that the square root values should be greater or equal to zero but it can't be negative..
\[x \ge 0\]
So Domain is all positive real numbers including 0 also..
But no negative numbers..
kitsune0724
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So the range would be [infinity, 0)?
waterineyes
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NO..
waterineyes
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let f(x) = y
so,
y = \(\sqrt{x}\)
Square both the sides:
\(y^2 = x\)
Range is (infinity, -infinity)..
waterineyes
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Sorry:
(-infinity, infinity)
kitsune0724
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Thank you.
waterineyes
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Welcome dear..