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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 990*x^4-263.7*x^2+7.61 ≥0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        990 * x ^ 4 - 263.7 * x ^ 2 + 7.61 ≥0         (1)

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    From inequality(1)：
         x ≤ -0.48315 或  -0.181465 ≤ x ≤ 0.181465 或  x ≥ 0.48315

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    The final solution set is :
         x ≤ -0.48315 或  -0.181465 ≤ x ≤ 0.181465 或  x ≥ 0.48315

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