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determine whether the function has a maximum or minimum value.
f(×)= x^2+9

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Konrad509id
[tex]a>0[/tex] so the function has a minimum, but no maximum.
Kate200468id
[tex]f(x)= x^2+9\\\\for\ each\ x\in R\\\\x^2 \geq 0\ \ \ \Rightarrow\ \ \ x^2+9 \geq 9\ \ \ \Rightarrow\ \ \ f(x) \geq 9\\\\y_{min}=9\\ y_{max}\ \ \ \rightarrow\ \ \ not\ exist[/tex]

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