数学考试概念及解析

数学考试概念及解析

　　GRE考试数学考点：Linear Equation of One Variable

　　Linear Equation of One Variable

　　An equation of one variable where the variable have unit power is called a linear equation(LE).

　　Example:

　　2x-3=8 and 3x-10=0 are both linear equations.

　　2x2=8 and 3x+√x=14 are not linear equations.

　　Remember:

　　In linear equation there is no square, square root, or other powers.

　　GRE考试数学考点：Mode

　　The mode of a set of numbers is the number that repeats the most in the set.

　　Example:

　　Mode of the set {1,2,3,2,4,5} is 2.

　　The set of numbers {1,2,4,1,2,3,6,8}has two modes:1 and 2.

　　Remember:

　　There can be more than one number with the highest repeat count. In that case all of them with the highest repeat count are modes.

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