If loga (12 / A-1) < 1, then the value range of a is

(1) If 0

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1. If loga (a + 2) > loga (a + 1), then the value range of a is___ .】 +∞）
2. If loga (A2 + 1)
3. loga(2/3)
4. If loga23 > 1, then the value range of a is______ ．
5. When 0 ＜ X & # 171; 0.5 and 4 ＜ loga (x), what is the value range of a
6. F (x) = loga | loga x | (00), that is, X is not equal to 1 and x > 0 （2）loga | loga x|>1 | loga x|
7. Must the base a in logarithm loga (x) be greater than 0? For example, does the base a have to be greater than 0 in senior high school?
8. If we know that loga x = 2, logb x = 1, then the logarithm of a (root B3) is? I calculate a = x = B But then I don't know what to do
9. Logarithmic calculation Let log83 = P, log35 = q, then lg5 =?
10. How to calculate logarithm?
11. If three fourths of loga is less than 1, what is the range of a?
12. If a is the logarithm of the bottom 3 / 4 < 1, (a > 0 and a is not equal to 1), find the value range of the real number a?
13. If the function f (x) = 1 + log (a) x is a decreasing function in the interval (0, positive infinity), then the value range of a?
14. If the function y = 1 + 2 ＾ x + a.4 ＾ x is greater than zero on (- infinity, 1), the value range of real number a is obtained
15. Given the square of 2x + 1 (Y-2) under the root sign = 0, find the arithmetic square root of the square of x-2xy
16. Given | x + y + 4 | + √ [(X-2) & sup2;] = 0, find the square root of x power of Y Tick [~] is the root sign,
17. It is known that 10 ＋ 3 = x + y, where x is an integer and 0
18. Given 10 + 3 = x + y, where x is a positive integer and 0 < y < 1, find the opposite number of X-Y
19. Why lg5 · LG20 = lg5 (2lg2 + lg5) See the answer is written like this, but I even to (1 + LG2) (1 - LG2), ask for detailed explanation
20. Given that the power function satisfies: X ≥ 4, then f (x) = (1 / 2) ^ X; when x < 4, f (x) = f (x + 1), then f (2 + L, logarithm of 3 with 2 as the base) is,