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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality π*x-2.3*sqrt(1-x*x) ≥0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         π * x - 2.3 * sqrt ( 1 - x * x ) ≥0         (1)
        From the definition field of √
         1 - x * x ≥ 0        (2 )

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    From inequality(1)：
         x ≥ 0.590723
    From inequality(2)：
         -1 ≤ x ≤ 1

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    From inequalities (1) and (2)
         0.590723 ≤ x ≤ 1    (3)

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    The final solution set is :
         0.590723 ≤ x ≤ 1

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