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seen Jul 23 '12 at 12:21
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Jul
7
comment Quick question about comparing functions.
I can sure have $h(x)=f(x)-g(x)$ but the problems is, I wouldn't know in what interval would it be nonnegative or nonpositive. It's more interesting and convenient if I'd know if it is nonnegative or nonpositive when I $ \underline{already} $ have an interval.
Jul
7
awarded  Supporter
Jul
7
awarded  Scholar
Jul
7
awarded  Commentator
Jul
7
accepted Quick question about comparing functions.
Jul
7
comment Quick question about comparing functions.
Oh yeah, I've forgotten that stipulation. Many thanks, you just saved me from all that strenuous graphing work.
Jul
7
comment Quick question about comparing functions.
Oh, yeah I'm getting what you're trying to say. This is similar to the first derivative test. From what I understood: If the derivative of f is greater than g for all values of x in the given interval, then we could say that the values of f is greater than g in the given interval. Is that it?
Jul
7
asked Quick question about comparing functions.
May
26
comment Conventions for antiderivatives notation.
Oh thanks, I guess it's just the notation. For some time, I've wondered how could mathematicians come up with such brilliant notations. I just came around asking; maybe I got it all wrong in my head.
May
26
asked Conventions for antiderivatives notation.
May
13
comment Proving a theorem on limits that approach infinity.
Yeah, I was too focused on getting a value for delta. I'm not very comfortable with assuming a value; but it works anyways.
May
13
revised Proving a theorem on limits that approach infinity.
There shouldn't be a zero in -x<(delta)
May
13
asked Proving a theorem on limits that approach infinity.
May
13
comment About limit theorems
I mean $|(f(x)-K)|+|(g(x)-L)|<\epsilon $ Latex is making me dizzy.
May
13
comment About limit theorems
Does that mean $|f(x)+g(x)-(K+L)|<|(f(x)-K)|+|g(x)-K)|$ Thus $|f(x)+g(x)-(K+L)|<\epsilon $ since $|(f(x)-K)|+|g(x)-K)|=\epsilon $
May
13
comment About limit theorems
It's ambiguous.
May
12
comment About limit theorems
Right. Last one though, for those who actually looked at the link, how did we get $<\frac{1}{2}\epsilon + \frac{1}{2}\epsilon $ then $=\epsilon$?
May
12
revised About limit theorems
added 73 characters in body
May
12
comment About limit theorems
Wow, that's pretty cool. I still can't think of it in general terms though, since the example was quite specific but that certainly did help. Thanks.
May
12
awarded  Student