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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality -7y^2-2y+1 >= 0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -7 * y ^ 2 - 2 * y + 1 >= 0         (1)

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    From inequality(1)：
         -0.546918 ≤ y ≤ 0.261204

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    The final solution set is :
         -0.546918 ≤ y ≤ 0.261204

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