Overview: 1 questions will be solved this time.Among them
           ☆1 inequalities

[ 1/1Inequality]
    Assignment:Find the solution set of inequality x^2-x-2     Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         x ^ 2 - x - 2 < log( 2 , x + 2 ) - log( sqrt ( 2 ) , x )         (1)
        From the definition field of log
         2 > 0        (2 )
         x + 2 > 0 并且 ≠ 1        (3 )
        From the definition field of log
         sqrt ( 2 ) > 0        (4 )
         x > 0 并且 ≠ 1        (5 )

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    From inequality(1)：
         x < 2
    From inequality(2)：
         x ∈ R (R is all real numbers),that is, in the real number range, the inequality is always established!
    From inequality(3)：
         -2 < x < -1 或  x ＞ -1
    From inequality(4)：
         x ∈ R (R is all real numbers),that is, in the real number range, the inequality is always established!
    From inequality(5)：
         0 < x < 1 或  x ＞ 1

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    From inequalities (1) and (2)
         x < 2    (6)
    From inequalities (3) and (6)
         -2 < x < -1 或  -1 < x < 2     (7)
    From inequalities (4) and (7)
         -2 < x < -1 或  -1 < x < 2     (8)
    From inequalities (5) and (8)
         x ＞ 或  0 < x < 1 或  1 < x < 2     (9)

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    The final solution set is :
         x ＞ 或  0 < x < 1 或  1 < x < 2

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