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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 0 <= 25x-4.9×625/400×(1+x^2) <= 3.44 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        0 <= 25 * x - 4.9 × 625 / 400 × ( 1 + x ^ 2 )         (1)
         25 * x - 4.9 × 625 / 400 × ( 1 + x ^ 2 ) <= 3.44         (2)

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    From inequality(1)：
         0.342089 ≤ x ≤ 2.923217
    From inequality(2)：
         x ≤ 0.529816 或  x ≥ 2.73549

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    From inequalities (1) and (2)
         0.342089 ≤ x ≤ 0.529816 或  2.73549 ≤ x ≤ 2.923217    (3)

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    The final solution set is :
         0.342089 ≤ x ≤ 0.529816 或  2.73549 ≤ x ≤ 2.923217

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