#derivatives n stationary point

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viscid owl
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why for (c) the range can’t be f(x)>0

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dense vectorBOT
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crystal obsidian
viscid owl
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im still confused

crystal obsidian
viscid owl
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initially my ans for c is f(x)>0, but after checking the ans sheet, found out f(x)>=14

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my question is yah ans is not f(x)>0

crystal obsidian
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Like, what you've shown here is f(x) >= 14.

viscid owl
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that’s the ans provided by the ans sheet

crystal obsidian
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...right, and that's not what you said the answer sheet answer was.

viscid owl
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then what’s the correct answer

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for the range of fx

crystal obsidian
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Let me be clearer - you said that the answer sheet said f(x) >= 2, but what it says in the image is f(x) >= 14.

viscid owl
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oh mb

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f(x)>=f(2)is the ans

crystal obsidian
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Because the function achieves its minimum at x = 2.

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And by definition, it can never be less than its minimum.

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Except apparently it can.

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Because I guess that's just a local minimum.

viscid owl
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🤔

crystal obsidian
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$\lim_{x \to 0^-} f(x) = -\infty$

ocean condorBOT
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Techie Literate

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viscid owl
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i unterstand now

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thxx a lot

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+close

round sandBOT
# viscid owl +close
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# round sand

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