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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality arcsin（2x-1） ≥0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         arcsin ( 2 * x - 1 ) ≥0         (1)
        From the definition field of arcsin
         2 * x - 1 ≥ -1        (2 )
         2 * x - 1 ≤ 1        (3 )

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    From inequality(1)：
         x ≥ 1/2
    From inequality(2)：
         x ≥ 0
    From inequality(3)：
         x ≤ 1

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    From inequalities (1) and (2)
         x ≥ 1/2    (4)
    From inequalities (3) and (4)
         1/2 ≤ x ≤ 1    (5)

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    The final solution set is :
         1/2 ≤ x ≤ 1

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