anonymous
  • anonymous
Integration Question in comment, i don't know how to attach images in a question
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
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anonymous
  • anonymous
oooops, i didn't mean dy/dx, i meant the integration sign
anonymous
  • anonymous
aah - i thought that might be the case

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anonymous
  • anonymous
if there was the correct notification, would that be correct?
anonymous
  • anonymous
split this up into partial fractions we get INT (1 - 7 ) dx ----- 3(x+3)
anonymous
  • anonymous
can you continue from there?
anonymous
  • anonymous
you rresult is not correct
anonymous
  • anonymous
I don't understand what you have done, where has this 7 and this 3(x+3) came from?
anonymous
  • anonymous
sorry guy - i copied the question down wrongly - i'll hav e another look at it
anonymous
  • anonymous
ok, i was a bit worried when a 7 randomly appeared lol thanks for helping me out, im currently revising for an exam :D
anonymous
  • anonymous
kind of a guess: is it this instead?
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anonymous
  • anonymous
or...
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anonymous
  • anonymous
first do long division to obtain INT 1 / 3(3x + 1) + INT 1/3 = 1/3 INT 1/ (3x+1) + x/3
anonymous
  • anonymous
dividing 3x + 2 by 9x+ 3 gives 1/3 + 1 / (9x+ 3)
anonymous
  • anonymous
am i right?
anonymous
  • anonymous
must admit my integration is pretty rusty
anonymous
  • anonymous
lol, mine too, and i have an exam on it in about 36 hours xD
anonymous
  • anonymous
I thought that the question would involve natural logs when integrating (like when 1/x is integrated) doesn't it?
anonymous
  • anonymous
yes - so integrating 1/3 INT 1/ (3x+1) = 1/9 ln| 3x+1| so finally answer is x/3 + 1/9 ln| 3x+1| + C
anonymous
  • anonymous
yea thats correct - i checked it out on wolframalpha
anonymous
  • anonymous
ok, thanks for your help :D
anonymous
  • anonymous
yw

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