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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality R*330/2+1.645*√(R+5)*√(3002+1802)+R*220/2+1.645*√(R+14)*300 <6000 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         R * 330 / 2 + 1.645 * √ ( R + 5 ) * √ ( 3002 + 1802 ) + R * 220 / 2 + 1.645 * √ ( R + 14 ) * 300 <6000         (1)
        From the definition field of √
         x + 5 ≥ 0        (2 )
        From the definition field of √
         x + 14 ≥ 0        (3 )

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    From inequality(1)：
         R < 11.151951
    From inequality(2)：
         R ≥ -5
    From inequality(3)：
         R ≥ -14

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    From inequalities (1) and (2)
         -5 ≤ R < 11.151951    (4)
    From inequalities (3) and (4)
         -5 ≤ R < 11.151951    (5)

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    The final solution set is :
         -5 ≤ R < 11.151951

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