anonymous
  • anonymous
Which of the following integrals are divergent? There are 3 functions there and I believe that the last 2 both diverge, am I doing something wrong? Because I can only choose 1 answer,
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
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amistre64
  • amistre64
div means goes off into infinity right?
amistre64
  • amistre64
if it integrates to a value its convergent

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anonymous
  • anonymous
yes
amistre64
  • amistre64
cosx comes from sinx 6 sinx from 0 to inf well, im sure sinx bounces back and forth so it has no value at infinity ... but lets check the wolf just in case the althiemers is rearing up :)
anonymous
  • anonymous
lol, mkay
amistre64
  • amistre64
http://www.wolframalpha.com/input/?i=integrate+6cos%28x%29+from+0+to+infinity doesnt converge, must diverge then
anonymous
  • anonymous
yeah, same thing I got, but I also got that the theta one diverges :/
amistre64
  • amistre64
the last one; is that sin(10t) dt ? or sin(10) t dt
anonymous
  • anonymous
sin10(theta) d(theta) I believe
amistre64
  • amistre64
in either case, it doesnt converge either ... according to the wolf. so in this case, is there a difference definition of divergent than the one of used to seeing?
amistre64
  • amistre64
DNE and divergent might be different ideas
anonymous
  • anonymous
Well, can't you say it diverges by TFD?
amistre64
  • amistre64
test for divergence? perhaps
amistre64
  • amistre64
the last 2 definantly diverge; maybe its a program error?
anonymous
  • anonymous
That really sucks of me then lol, I can only choose one...
anonymous
  • anonymous
for*
amistre64
  • amistre64
who grades it?
anonymous
  • anonymous
Automatically, by the computer
amistre64
  • amistre64
whats your grade at the moment :)
anonymous
  • anonymous
Lol, its about 93,ish
anonymous
  • anonymous
I'll try taking a screen shot and email it to the professor, if I miss it maybe he'll just give me the points :P
amistre64
  • amistre64
might just have to cross your fingers and click next ;)
amistre64
  • amistre64
thats possible too
anonymous
  • anonymous
Hope he's in a good mood, but thanks for the help!
amistre64
  • amistre64
good luck ..

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