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    Use the substitution u = 2x ? 5 to show that
    the integral between the limits 3 and 2.5 of (4x ? 8)(2x ? 5)^7 dx
    is 17/72 ?
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    What are the ? meant to be? Then I will try and help
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    http://www.thestudentroom.co.uk/wiki/LaTex
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    the integral between the limits 3 and 2.5 of (4x - 8)(2x - 5)^7 dx
    ...I believe.

    Putting u=2x-5 gives dx=du/2.
    Find an expression for 4x-8 in terms of u.
    Change the limits e.g. x=3 becomes u=2x3-5=1.

    Make the substitution and integrate w.r.t u
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    (Original post by vc94)
    the integral between the limits 3 and 2.5 of (4x - 8)(2x - 5)^7 dx
    ...I believe.

    Putting u=2x-5 gives dx=du/2.
    Find an expression for 4x-8 in terms of u.
    Change the limits e.g. x=3 becomes u=2x3-5=1.

    Make the substitution and integrate w.r.t u
    TY
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    (Original post by sohinder)
    TY
    What does TV stand for?
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    (Original post by steve2005)
    What does TV stand for?
    TY, not TV, stands for Thank You
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    (Original post by sohinder)
    TY
    YW!
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    (Original post by vc94)
    YW!
    Well thanks for the negative rep, guys!
    I don't know why I bother sometimes!

    YW=You're Welcome
 
 
 
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Updated: March 20, 2011
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