Overview: 3 questions will be solved this time.Among them
           ☆3 equations

[ 1/3 Equation]
    Work: Find the solution of equation ex = x+1 .
    Question type: Equation
    Solution:
    The solution of the equation:
        x₁=0
        x₂=0    
    There are 2 solution(s).

解程的详细方法请参阅：《方程的解法》
[ 2/3 Equation]
    Work: Find the solution of equation lnx = x-1 .
    Question type: Equation
    Solution:
    The solution of the equation:
        x₁=1
        x₂=1    
    There are 2 solution(s).

解程的详细方法请参阅：《方程的解法》
[ 3/3 Equation]
    Work: Find the solution of equation ex = lnx-2 .
    Question type: Equation
    Solution:    This equation has no real solution!

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