I have two quick questions. The first one, I am stuck on and I keep getting zero, but I don't think its correct.
1. Find the intervals where f is concave upward and concave downward:
f(x)= x^3 -3x +1
As I previously mentioned, I keep getting zero when finding the intervals where the concavity is, but I don't think its correct. If someone could explain how to find it, I would greatly appreciated. I don't want the answer just an an explanation!
Secondly, this one is going to look stupid, but multiplying 'fractions' is my weakness. So if someone could confirm if I multiplied this correctly, I would also appreciated it!
2. (23- (x/500x) ) * (x)
my answer: (23x - (x^2 / 500x) )
huge possibility that its wrong (and probably is)! Not my strong suit, as previously mentioned.
So if someone could help, I would greatly appreciate it! Thanks and have a great day! :)
2007-03-23
10:52:49
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5 answers
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asked by
Anonymous