Given that the log is 0.3 B 2 to the power of 0.1 and C 0.2 to the power of 1.3, the size relation of the real number a B C is as follows
From the image of exponential function and logarithmic function, we can judge the size of a, B, C and 0, 1, so we can judge the size of a, B, C. from the image of exponential function and logarithmic function, we can get: a < 0, 0 < B < 1, C > 1, so a < B < C
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