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           ☆1 inequalities

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 569.168×(0.4+0.6×((t-7))/2) = 15×(1-cos(π×((t-6))/5),7 )     Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        569.168 × ( 0.4 + 0.6 × ( ( t - 7 ) ) / 2 ) 15 × ( 1 - cos ( π × ( ( t - 6 ) ) / 5 ) , 7 ) < t         (1)
         t <8         (2)

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    From inequality(1)：
        The solution set is empty, that is, within the range of real numbers, the inequality will never be established!
    From inequality(2)：
         t < 8

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    The final solution set is :
        The solution set is empty,that is, the inequality will never be estatlished within the real number range.

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