anonymous
  • anonymous
ok how to find the area ??
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
1 Attachment
amistre64
  • amistre64
integrate :) the trick is, does your material say to keep (-) areas negative or not....
anonymous
  • anonymous
ok i did that

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anonymous
  • anonymous
but i get confuse what points show i use
amistre64
  • amistre64
\[F(x) = \int\limits_{0}^{3} (x^3 -4x) dx \rightarrow F(x)=\frac{x^4}{4} - \frac{4x^2}{2} |_{0}^{3}\]
anonymous
  • anonymous
ok
amistre64
  • amistre64
Area = F(3) - F(0) F(0) = 0 F(3) = 81/4 - 36
amistre64
  • amistre64
22'3/4 - 36 = -13' 1/4..... so that should be the area
amistre64
  • amistre64
it aint cause I forgot how to multiply lol
amistre64
  • amistre64
(3)^4 ---- - 2(3)^2 4
amistre64
  • amistre64
22' 3/4 - 18 = 4' 3/4...right?
anonymous
  • anonymous
i have -135/4
amistre64
  • amistre64
ack!!...someone get me a calculator lol
anonymous
  • anonymous
lol
amistre64
  • amistre64
2.25.... and thats my final offer :) How you coming up with -135/4?
anonymous
  • anonymous
i mixed my #s lol but i have 9/4
amistre64
  • amistre64
20' 1/4 ------ 4 | 81 -8 ----- 1 -0 --- 1 <- remainder
amistre64
  • amistre64
9/4 is good :)
anonymous
  • anonymous
ok:D
amistre64
  • amistre64
20' 1/4 -18 -------- 2' 1/4 = 9/4
anonymous
  • anonymous
sweet! :D

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