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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality -3 <= -m^2+2*m-2 <= 3 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        -3 <= -m ^ 2 + 2 * m - 2         (1)
         -m ^ 2 + 2 * m - 2 <= 3         (2)

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    From inequality(1)：
         -0.414214 ≤ m ≤ 2.414214
    From inequality(2)：
         m ∈ R (R is all real numbers),that is, in the real number range, the inequality is always established!

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    From inequalities (1) and (2)
         -0.414214 ≤ m ≤ 2.414214    (3)

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    The final solution set is :
         -0.414214 ≤ m ≤ 2.414214

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