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solong [7]
3 years ago
13

State the maximum and mini mum value of f(x)= x^2+9

Mathematics
2 answers:
kvv77 [185]3 years ago
8 0
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
sp2606 [1]3 years ago
7 0
a>0 \Rightarrow \hbox{no maximum}

y_{min}=\frac{-b^2+4ac}{4a}\\y_{min}=\frac{-0^2+4\cdot1\cdot9}{4\cdot1}\\
y_{min}=9
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