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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 1.5*0.5*x/1.4*(e^(-0.1x)/(1-e^(-0.1*x))-e^(-1.5*x)/(1-e^(-1.5*x))) >3 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        1.5 * 0.5 * x / 1.4 * ( e ^ ( -0.1 * x ) / ( 1 - e ^ ( -0.1 * x ) ) - e ^ ( -1.5 * x ) / ( 1 - e ^ ( -1.5 * x ) ) ) >3         (1)
        From the definition field of divisor
         1 - e ^ ( -0.1 * x ) ≠ 0        (2 )
        From the definition field of divisor
         1 - e ^ ( -1.5 * x ) ≠ 0        (3 )

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    From inequality(1)：
         x ∈ R (R is all real numbers),that is, in the real number range, the inequality is always established!
    From inequality(2)：
         x < 0 或  x ＞ 0
    From inequality(3)：
         x < 0 或  x ＞ 0

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    From inequalities (1) and (2)
         x < 0 或  x ＞ 0    (4)
    From inequalities (3) and (4)
         x < 0 或  x ＞ 0    (5)

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    The final solution set is :
         x < 0 或  x ＞ 0

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