Overview: 4 questions will be solved this time.Among them
           ☆2 equations
           ☆2 arithmetic calculations

[1/4 Formula]
    Work: Calculate the value of equation log(2,sqrt(2)) .
    Question type: Mathematical calculation
    Solution:
          log(2,sqrt(2))
        =log(2,sqrt2)
        =0.5
    Answer:log(2,sqrt(2))=0.5
[2/4 Formula]
    Work: Calculate the value of equation abs(-3)+tan45 .
    Question type: Mathematical calculation
    Solution:
          abs(-3)+tan45
        =abs(-3)+tan45
        =3+tan45
        =3+1.619775
        =4.619775
    Answer:abs(-3)+tan45=4.619775
    Note: Radian
[ 3/4 Equation]
    Work: Find the solution of equation abs(x)+3 = 6 .
    Question type: Equation
    Solution:
    After the equation is converted into a general formula, it is converted into:
    ( x + 3 )( x - 3 )=0
    From
        x + 3 = 0
        x - 3 = 0
    it is concluded that:：
        x₁=-3
        x₂=3    
    There are 2 solution(s).

解一元二次方程的详细方法请参阅：《一元二次方程的解法》
[ 4/4 Equation]
    Work: Find the solution of equation x+log(x,27) = 6 .
    Question type: Equation
    Solution:
    The solution of the equation:

x1=3

        x₂≈2.809788 , keep 6 decimal places    
    There are 2 solution(s).

解程的详细方法请参阅：《方程的解法》

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