Question
Consider the function $f(x)=x^{2}+1$(a) Explain why $y=5$ is in the range of $f$.(b) Explain why $y=0$ is not in the range of $f$.(c) Argue that the range of $f(x)=x^{2}+1$ is $[1, \infty)$.
Step 1
We need to determine if $y=5$ is in the range of $f$. To do this, we need to find a value of $x$ such that $f(x)=5$. Show more…
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