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Math Help - definition of 'linear'

  1. #1
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    definition of 'linear'

    definition of 'linear'-screen-shot-2013-01-21-10.28.29-pm.png

    Of the above list of equations a) c) and f) are said to be linear, but I thought linear equations were not allowed to have fractional exponents? Both a) and f) have the square root of a variable (x_3 and x_2 respectively) no?
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  2. #2
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    Re: definition of 'linear'

    Hey kingsolomonsgrave.

    I agree with you in that if the terms are to a non-unit power (i.e. not x^1) then they are not linear.

    If its just the coeffecient that is irrational though then this is OK.
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