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2. If x ∈ a = > x ∈ B, then the relation between a and B is 1. If loga 3 > logb 3 > 0, A.0
1.D
2.C
3. A is a subset of B
4.△=1-4k1/4
It is known that ab = C (a > 0, b > 0 and C ≠ 1), log (c) B = x, and X is used to express log (c) a
That C is the base
log(c)a=log(ab)a
log(c)b=log(ab)b=x
log(ab)a+log(ab)b=log(ab)ab=1
So log (c) a = log (AB) a = 1-x
You learned here~
If a > b > 0, and a + B = 1, a = logb (a), B = Log1 / b (a), C = log (1 / A + 1 / b) ab
Let a = 3 / 5, B = 2 / 5, so a = logb (a) is a number greater than one, B = Log1 / b (a) is a number less than zero, C = log (1 / A + 1 / b) AB is also a number less than zero
Given a = 0.2 ^ 0.3, B = log (0.2) 3, C = log (0.2) 4, compare the size
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