Overview: 2 questions will be solved this time.Among them
           ☆2 inequalities

[ 1/2Inequality]
    Assignment:Find the solution set of inequality -1     Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -1 < a - ( a * a - 1 ) ^ 0.5         (1)

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    From inequality(1)：
         a ∈ R (R is all real numbers),that is, in the real number range, the inequality is always established!

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    The final solution set is :
         a ∈ R (R is all real numbers),that is, in the real number range, the inequality is always established!
[ 2/2Inequality]
    Assignment:Find the solution set of inequality 3 >a+(a*a-1)^0.5 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        3 > a + ( a * a - 1 ) ^ 0.5         (1)

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    From inequality(1)：
         a < 5/3

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    The final solution set is :
         a < 5/3

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