anonymous
  • anonymous
calc ques
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
cost of a cable is \[6\sqrt{2}\]. explain meaning of \[\int\limits_{25}^{30}6\sqrt{x}\] in context of this problem
amistre64
  • amistre64
it looks to be the length of the cable...maybe
anonymous
  • anonymous
how did you get that? random guess?

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amistre64
  • amistre64
yeah...random guess :) gut feeling, intution.... sheer imagination
anonymous
  • anonymous
i bleeve in ure answer since uve 211 fans :)
amistre64
  • amistre64
ohnoyou dont, dont let this number fool ya...im an idiot in disguise :)
anonymous
  • anonymous
hahaha
amistre64
  • amistre64
without a complete problem to go on, thats just my guess :)
anonymous
  • anonymous
well ok: company makes cables for 120 bucks a meter. for a fixed length, the price to make the cable is 6 rad 2.
amistre64
  • amistre64
6sqrt(2) per foot?
anonymous
  • anonymous
per meter but yes thats the right EQ
amistre64
  • amistre64
er...meter
anonymous
  • anonymous
:)
amistre64
  • amistre64
then those numbers on top and beneath your integral sign would most likely be an interval of length of some sort...
anonymous
  • anonymous
yes it is
amistre64
  • amistre64
the "line" integral is a squareroot function... I know that much :)
anonymous
  • anonymous
srry the 120 refers to the company SELLING price
anonymous
  • anonymous
what is a line integral o.O
amistre64
  • amistre64
the line integral is: \[\int\limits_{} \sqrt{[f'(x)]^2+[g'(x)]^2} dx\]
anonymous
  • anonymous
uh ok
amistre64
  • amistre64
or if y is a function of x...then f'(x) = 1 and you put in the functiuon for y on the other side
anonymous
  • anonymous
o.o
amistre64
  • amistre64
you might notice the format from finding the length of the hypotenuse of a right triangle
amistre64
  • amistre64
c = sqrt(a^2 + b^2)
anonymous
  • anonymous
yeah. missing the deriv's though
amistre64
  • amistre64
yep, same concept, your trying to find the length of a curve by looking really close at it until it flattens out
anonymous
  • anonymous
oh.
amistre64
  • amistre64
then adding up all the little bitty flat parts
anonymous
  • anonymous
so you still think the answer to my question is the total length of cable?
anonymous
  • anonymous
doesnt seem right to me cause you alredady have 25 and 30. possibly something w/ the price?
amistre64
  • amistre64
i think it has something to do with the length of a cable.... yeah, but to be sure id have to know the average rainfall in the amazon...you know the basics :)
amistre64
  • amistre64
price involved with length....its in there someplce
anonymous
  • anonymous
haha ok thx. i just gonna fake this one... thx for help!
amistre64
  • amistre64
lol...sure thing ;)

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