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jennychan12 Group Title

Am I doing something wrong? See below.

  • one year ago
  • one year ago

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  1. jennychan12 Group Title
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    \[\int\limits (x \sqrt{x+2})dx\]

    • one year ago
  2. jennychan12 Group Title
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    u = x+2 ---> x = u-2 so \[\int\limits (u-2)u^{\frac{ 1 }{ 2 }} du\] \[\int\limits u^{\frac{ 3 }{ 2 }} - 2u^{\frac{ 1 }{ 2 }}\] am i correct so far? if i am i can do the rest

    • one year ago
  3. jennychan12 Group Title
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    oops. forgot the du on the last part

    • one year ago
  4. jennychan12 Group Title
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    If it is it'd be \[F(u) = \frac{ 2 }{ 5 } u^{\frac{ 5 }{ 2 }} -\frac{ 4 }{ 3 }u^{\frac{ 3 }{ 2 }}\] and I'd just plug in the u's.

    • one year ago
  5. shining Group Title
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    true

    • one year ago
  6. jennychan12 Group Title
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    oops forgot the +C I checked the answer and it'd partially correct. i got to the 2/5u..... i don't understand what they did after.

    • one year ago
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  7. slaaibak Group Title
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    they just factorise

    • one year ago
  8. jennychan12 Group Title
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    ohhh ok lemme try that and see if i get it right.. :/

    • one year ago
  9. precal Group Title
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    at the end they sub u back in

    • one year ago
  10. jennychan12 Group Title
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    -_- that just makes more work oh well i got the answer, thanks.

    • one year ago
  11. slaaibak Group Title
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    cool

    • one year ago
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is replying to Can someone tell me what button the professor is hitting...

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