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It is known that the set a = {x | X & # 178; + 3x-18 > 0}, B = {x | X & # 178; - (2k + 1) x + K (K + 1) ≤ 0, And a ∩ B ≠ &;, then the value range of real number k is——
A={x|x3}
B={x|k≤x≤k+1}
∵A∩B≠∅
∴k+1-6
∴k-6
RELATED INFORMATIONS
- 1. (3x²-2x-1)÷（x-1)=（
- 2. (- 4x) (2x & # 178; + 3x-1) to specific process
- 3. Find the maximum value of the following format: (1) y = 2x & # 178; + 8x + 9 (2) y = - 2x & # 178; + 3x + 7
- 4. 1.x²+4/3x+______ =(x+____ )² 2. Given (A & # 178; + B & # 178;), # 178; - (A & # 178; + B & # 178;) - 6 = 0, then a & # 178; + B & # 178=____ 3. The equations are solved by formula method and collocation method: 2x & # 178; - 3x = 2, 2x-y & # 178; + 6y-11 = 0, x-2y-1 = 0
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- 11. What is the solution of X & # 178; - 3x + 18 = 0,
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- 17. ① 16m ^ - n ^ 4 ② 16 (a-b) & # - 178; - 9 (a + b) & # - 178; ③ x ^ 5y-xy ④ 2012 & # - 178; - 2011 & # - 178; ⑤ 429 & # - 178; × 2-171 & # - 178; × 2 ⑥ 1000 & # / 252 & # - 178; - 248 & # - 178; ⑦ (50 and 1 / 11) & # - 178; - (49 and 10 / 11) & # - 178;
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