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Math Help - Need a little Help

  1. #16
    Junior Member Soldja Soul3ss's Avatar
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    This question is part of the same test so i guess it has some type of relevance.



    What type of formula or method do i use to solve this?
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  2. #17
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    Re:

    Re:
    Attached Thumbnails Attached Thumbnails Need a little Help-20.gif  
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  3. #18
    Grand Panjandrum
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    Quote Originally Posted by qbkr21 View Post

    4. D (i believe)
    There is no right answer to 4, it should be |x|sqrt(y), as by convention sqrt()
    is positive (for real positive argument), so sqrt(x^2 y) is by convention
    positive, but x sqrt(y) has the same sign as x.

    RonL
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  4. #19
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by CaptainBlack View Post
    There is no right answer to 4, it should be |x|sqrt(y), as by convention sqrt()
    is positive (for real positive argument), so sqrt(x^2 y) is by convention
    positive, but x sqrt(y) has the same sign as x.

    RonL
    ah yes. my bad. sqrt(x^2) = |x| by definition. you know that mistake messed me up in a proof class once, lost like 5 points, i should remember that
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  5. #20
    Junior Member Soldja Soul3ss's Avatar
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    you guys are so pro at confusing me sometimes lol.
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