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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality tanx ≤1 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         tan x ≤1         (1)

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    From inequality(1)：
         -7.853982 ≤ x ≤ -5.497787 或  -4.712389 ≤ x ≤ -2.356194 或  -1.570796 ≤ x ≤ 0.785398 或  1.570796 ≤ x ≤ 3.926991 或  4.712389 ≤ x ≤ 7.068583

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    The final solution set is :
         -7.853982 ≤ x ≤ -5.497787 或  -4.712389 ≤ x ≤ -2.356194 或  -1.570796 ≤ x ≤ 0.785398 或  1.570796 ≤ x ≤ 3.926991 或  4.712389 ≤ x ≤ 7.068583
    *Note: Radian.

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