高中阶段会遇到一些简单的指数方程和对数方程,教材对这类方程的解法并不展开,问题主要设置在这类简单的超越方程的解的个数、解的近似值以及已知解的情况求参数的取值范围等方面.这类问题的解决往往可以把方程、函数、曲线三者非常密切的联系到一起,其 In high school, some simple exponential equations and logarithmic equations are encountered. The textbook solution to these equations does not expand. The problem is mainly set in the number of solutions of such simple transcendental equations, approximations of solutions, and known solutions. The situation requires the range of values ​​of the parameters, etc. The solution of such problems can often link equations, functions, and curves very closely.