Vai trò của tập xác định trong việc xác định tính đơn điệu của hàm logarit

Determining the domain of a logarithmic function becomes more intricate when a complex expression is present within the logarithm. In such cases, it becomes necessary to ensure that the expression itself consistently evaluates to a positive value.

In conclusion, the domain of a logarithmic function is not merely a set of permissible input values but a defining characteristic that directly influences the function's monotonic behavior. The inherent relationship between the domain, the base of the logarithm, and the monotonic properties underscores the importance of understanding these concepts when working with logarithmic functions in various mathematical contexts.