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satellite73 Group TitleBest ResponseYou've already chosen the best response.0
was the last answer wrong?
 3 years ago

hoda Group TitleBest ResponseYou've already chosen the best response.0
hkd d d d d d d dddddd i
 3 years ago

ta123 Group TitleBest ResponseYou've already chosen the best response.1
I'm nut sure but did you check all the graphs to make sure your first answer was correct
 3 years ago

ta123 Group TitleBest ResponseYou've already chosen the best response.1
oops! I misspelled not to nut,
 3 years ago

ta123 Group TitleBest ResponseYou've already chosen the best response.1
satellite where you at?
 3 years ago

satellite73 Group TitleBest ResponseYou've already chosen the best response.0
i only saw three graphs. are there more?
 3 years ago

ta123 Group TitleBest ResponseYou've already chosen the best response.1
there 5 graphs to choose from
 3 years ago

satellite73 Group TitleBest ResponseYou've already chosen the best response.0
ok it is still b i think
 3 years ago

satellite73 Group TitleBest ResponseYou've already chosen the best response.0
you know that the second derivative is always positive. this tells you that the function is always concave up
 3 years ago

satellite73 Group TitleBest ResponseYou've already chosen the best response.0
4 and 5 both have parts that are concave down. so they are out as well.
 3 years ago

satellite73 Group TitleBest ResponseYou've already chosen the best response.0
yeah i see them now. 3, 4, 5 all have parts that are concave down, but you are told that \[f''(x)>0\] for all x not equal 0, so your function must be concave up
 3 years ago

satellite73 Group TitleBest ResponseYou've already chosen the best response.0
only 1 and 2 are always concave up, so it has to be the second one for the reason i stated earlier
 3 years ago

ta123 Group TitleBest ResponseYou've already chosen the best response.1
Thanks I could you help me on a similar problem dealing with finding the relative minimum on a graph
 3 years ago

GoBlue Group TitleBest ResponseYou've already chosen the best response.0
Relative min is where the function changes from decreasing to increasing, or where the derivative changes from negative to positive.
 3 years ago
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