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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality cosx <1/x .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         cos x <1 / x         (1)
        From the definition field of divisor
        x ≠ 0        (2 )

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    From inequality(1)：
         x < -14.20761 或  -10.903734 < x < -7.979631 或  -4.48767 < x < -2.073933 或  0 < x < 4.917186 或  7.724153 < x < 11.085902 或  x ＞ 14.066014
    From inequality(2)：
         x < 0 或  x ＞ 0

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    From inequalities (1) and (2)
         x < -14.20761 或  -10.903734 < x < -7.979631 或  -4.48767 < x < -2.073933 或  0 < x < 4.917186 或  7.724153 < x < 11.085902 或  x ＞ 14.066014    (3)

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    The final solution set is :
         x < -14.20761 或  -10.903734 < x < -7.979631 或  -4.48767 < x < -2.073933 或  0 < x < 4.917186 或  7.724153 < x < 11.085902 或  x ＞ 14.066014

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