anonymous
  • anonymous
How do you know if integrals are improper?
Mathematics
  • Stacey Warren - Expert brainly.com
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schrodinger
  • schrodinger
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anonymous
  • anonymous
if the function that you're integrating goes to infinity ^_^ I guess
anonymous
  • anonymous
Okay! Do you know how to tell if they converge or diverge?
anonymous
  • anonymous
if the answer = a finite number, then it converges, but if your answer = infinity , then it diverges ^_^

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anonymous
  • anonymous
no, it has infinity as one of the limits
anonymous
  • anonymous
it doesnt "go to infinity" :\
anonymous
  • anonymous
but this one also works, my professor said that, or maybe I was day dreaming again ._.
anonymous
  • anonymous
or it could result in division by zero
anonymous
  • anonymous
Basically, if there is an interval that you are integrating within, ie there are numbers on the top and bottom of the intendant, or the s looking thing, then it is proper. If there are no numbers, and it goes tninfinity, it's improper. You tell if it converges or diverges by seeing if any values cause the function to be indeterminate.
anonymous
  • anonymous
that's what I meant elec, division by zero = infinity
anonymous
  • anonymous
\[\int\limits_{-\infty}^{\infty } f(x) dx\] something like that
anonymous
  • anonymous
Does that mean it's improper?
anonymous
  • anonymous
or \[\int\limits_{0}^{1} \frac{e^x}{x}\]
anonymous
  • anonymous
It's improper if there are no limits. The infinity is implied, so it's usually not written.
anonymous
  • anonymous
there are two cases either the interval of integration is infinite or the function to be integrate becomes infinite at the given interval of integration
anonymous
  • anonymous
so both of u guys elecengineer and sstrica r right
anonymous
  • anonymous
lol uzma :)
anonymous
  • anonymous
:)
anonymous
  • anonymous
Thanks guys!
anonymous
  • anonymous
yeh now I get what you me, but I dont like when people say that you get infinity when you divide by zero. Its not 100% mathematically correct, get your definitions in order :P
anonymous
  • anonymous
np ^_^
anonymous
  • anonymous
nothing is 100% , there's only 98% elec ^_^
anonymous
  • anonymous
?
anonymous
  • anonymous
100% = perfection perfection doesn't exist, but it's good to seek it ^_^
anonymous
  • anonymous
Wait .. so how do you know if it's converging or diverging again? Converging ends in an actual number and diverging goes to infinity or divides by zero?
anonymous
  • anonymous
finite number = converge, infinite number = diverge
anonymous
  • anonymous
It diverges if it has an asymptote.
anonymous
  • anonymous
torch aren't you supposed to be in bed by now? Lol
anonymous
  • anonymous
horizontal or vertical?
anonymous
  • anonymous
Thats how you find if it goes to zero or infinity
anonymous
  • anonymous
By using the asymptote?
anonymous
  • anonymous
Either asymptote will cause a divergence. It doesn't matter if it is horizontal or vertical. And I'm going star! Lol gimme a medal and fan me, catch ya later! Lol
anonymous
  • anonymous
What's a medal?
anonymous
  • anonymous
Next to my name there's a button. You push it for the person that helped the most or a lot. Haha
anonymous
  • anonymous
oh okayy
anonymous
  • anonymous
Sweet! :) hope that answered your questions!
anonymous
  • anonymous
It did!

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