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Junior high school math in' 89, isn't it log?
There is no record of junior high school mathematics in 1989.

Because the high school people's education edition requires the logarithmic function log. So junior high school mathematics in 1989 was not logarithmic.

Mathematical logarithm represents logarithm. In general, the function y = logax(a >;; 0, and a≠ 1) is called logarithmic function.