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Mathematics 12 Online
OpenStudy (rizags):

True or False Help Please! If f is decreasing on [0, 2] then f(0)>f(1)>f(2) If f'(1)>0, then f is increasing on [0, 2] If f is increasing on [0, 2] then f'(1)>0

OpenStudy (lochana):

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OpenStudy (lochana):

what do you think the relation of f(0), f(1) and f(2)

OpenStudy (rizags):

f(0)>f(1)>f(2)

OpenStudy (lochana):

yes. so first one is true

OpenStudy (rizags):

I think the second one is false and the third is true

OpenStudy (lochana):

why do you think second one is false?

OpenStudy (rizags):

Well, just because f'(1)>0, doesn't mean f'(x) at any other x on that interval is >0

OpenStudy (lochana):

yes that's true.

OpenStudy (rizags):

so first true, second false, third true?

OpenStudy (lochana):

yes. you are correct

OpenStudy (rizags):

Ok, thank you

OpenStudy (lochana):

you are welcome:)

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