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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality －πx/(√1－x∧2) ≤－1.714798 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -π * x / ( √ 1 - x ^ 2 ) ≤ -1.714798         (1)
        From the definition field of divisor
         √ 1 - x ^ 2 ≠ 0        (2 )

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    From inequality(1)：
         -2.272158 ≤ x ≤ -1 或  0.44011 ≤ x ≤ 1
    From inequality(2)：
         x < -1 或  -1 < x < 1 或  x ＞ 1

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    From inequalities (1) and (2)
         -2.272158 ≤ x < -1 或  0.44011 ≤ x < 1    (3)

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    The final solution set is :
         -2.272158 ≤ x < -1 或  0.44011 ≤ x < 1

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