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anonymous
 5 years ago
y=(50x^3)+(10x^2)+150x+250 find the positive interval, negative interval, increasing and decreasing intervals 11:33 pm
anonymous
 5 years ago
y=(50x^3)+(10x^2)+150x+250 find the positive interval, negative interval, increasing and decreasing intervals 11:33 pm

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0To find the increasing and decreasing intervals, you have to find f'(x), which means the critcal points then make a table and plug them in , so : x () 0 (+) and plug in the critical numbers _______________________________________________ f(x) ________________________________________________ f'(x) then substitute some values of x in the original function. if you get a  answer then f'(x) is decreasing, if you get a + answer then f'(x) is increasing, and when you're done you can compute the intervals of increasing and decreasing. It would be alot easier if I show it to you by hand lol, Hope this helps ^_^

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0LOL, believe me it's easier than you think.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i got f<2.36 for the positive

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0find the critical numbers, plug them in the table, then plug in some other negative numbers in the left, and positive numbers in the right. After that , plug them in f(x) to see what value we get, then write it in the f(x) row. If your answer is positive, then write in f'(x)'s row , increase and vice versa ^_^

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0it's positive, so f'(x) is increasing ^_^

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok what are the critical numbers

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0to know that you have to computer f'(x) :)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0the xintercept is 2.36 y intercept is 250 relative max is (1.06, 360.6) and relative min is (.93, 159.36) now would you be able to tell me the intervals

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0haven't worked it out yet, but when they say positive interval and negative interval isn't it the same as finding the increasing and decreasing intervals?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0no they are different

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0is it finding the Absolute mx and Absolute min?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0no i don't think those exist for this equation

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I'm still not getting what you mean by positive interval and negative interval, never heard of such thing lol >_<

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0oh. That's ok. I don't understand any of this.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0did you understand the increasing and decreasing intervals?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Not really. I'll probably have to study that more.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0after figuring out whether f'(x) is increasing or decreasing, you can then say from where and where does the function increase or decrease

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0lol, I wish I was there to draw it for you, it'll be alot more clearer than just typing it down . I'm sorry
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