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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality sqrt(9.8*((6+2*b)/(6+b))) ≤0.8 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         sqrt ( 9.8 * ( ( 6 + 2 * b ) / ( 6 + b ) ) ) ≤0.8         (1)
        From the definition field of divisor
         6 + x ≠ 0        (2 )
        From the definition field of √
         9.8 * ( ( 6 + 2 * x ) / ( 6 + x ) ) ≥ 0        (3 )

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    From inequality(1)：
         b ≤ -2.898734
    From inequality(2)：
         b < -6 或  b ＞ -6
    From inequality(3)：
         b ≤ -6 或  b ≥ -3

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    From inequalities (1) and (2)
         b < -6 或  -6 < b ≤ -2.898734     (4)
    From inequalities (3) and (4)
         b < -6 或  -3 ≤ b ≤ -2.898734    (5)

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    The final solution set is :
         b < -6 或  -3 ≤ b ≤ -2.898734

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