Given that the value of y = loga (3a-1) is always positive, then the value range of a is______ .
∵ loga (3a-1) is a positive number, or 0 ∪ a ∪ 13a − 1 ∪ 1, or 0 ∪ a ∪ 10 ∪ 3a − 1 ∪ 1, or & nbsp; 13 ∪ a ∪ 23
RELATED INFORMATIONS
- 1. Given that the value of y = loga (3a-1) is always positive, then the value range of a is______ .
- 2. If the function f (x) = loga [1 - (2a-1) x] is an increasing function in the interval [2,4], then the value range of a I know the answer. But why can't I get the interval
- 3. Let a = {1,3, a}, B = {1, a2-a + 1}, and a contain B, then the value of a is__ Given that x2 ∈ {1,0, X}, then the value of real number x is__ .
- 4. Given the set a = {0, 2, A2}, B = {1, a}, if a ∪ B = {0, 1, 2, 4}, then the value of real number a is______ .
- 5. Let a = {x | x2 < 4}, B = {x | (x-1) (x + 3) < 0} (1) find the set a ∩ B; (2) if the solution set of inequality 2x2 + ax + B < 0 is B, find the value of a and B
- 6. If the solution set of inequality 1 / 3 (x-a) > 2-A is x > 2, then the value of a is X,
- 7. The solution set of inequality | X-1 | + | X-2 | > 3 is______ .
- 8. The solution set of inequality (x + 1) (X-2) / (x-4) (x + 3) < 0 is
- 9. Given that f (x) holds for any real number a, B, f (AB) = f (a) + F (b) (1) find the values of F (0) and f (1) F (0) = f (0) + F (0), so f (0) = 0 F (1) = f (1) + F (1), so f (1) = 0 I can't understand the solution process. Why is it equal to zero?
- 10. It is known that f (AB) = f (a) + F (b) holds for any real number a and B 1) Finding the value of F (1) and f (0) 2) If f (2) = P, f (3) = q (P, q are constant), find the value of F (36) 3) Prove f (1 / x) = - f (x)
- 11. Y = loga (2a + 1)
- 12. The sum of all negative integers whose absolute value is greater than 3.6 but less than 6.3 is -? What time is it
- 13. How many negative integers are there with absolute value less than 3? How many integers are there?
- 14. Negative integers with absolute values greater than 1 / 3 and less than 7 / 3 are
- 15. The sum of all integers with absolute values greater than 100 and less than 2012 is
- 16. The sum of integers with absolute values greater than 1 and less than 100 is A.0 B.5 C.-5 D.10
- 17. The sum of all integers with absolute values greater than 1 and less than 100 is
- 18. How many integers have absolute value not less than 5 and not more than 10? What is the sum of these integers?
- 19. Sum of nonnegative integers with absolute value less than 100?
- 20. Integers with absolute values greater than 1 and less than 4 have______ The sum is______ .