9x + 5 concave upward concave downward 00

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A: Topic = Functions

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A: for concavw up  f''(x)>0for concave down   f''(x)<0d dx(x)n=nxn-1

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A: (a).The given function is:f(x)=x2+2x4-3x2+1

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A: we can find extreme values.

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Q: In the same problem, can you review D?

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A: y= -50/x5

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A: It is a Geometric Progression where first term is -2 and common ratio is -1.5

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