试求: [tex=2.143x1.214]OW/cxbdB8EAYPSZAHnKprnwg8F8ZimtXvYCfh9vPKW0=[/tex]物质的共轭酸或共轭碱的[tex=1.571x1.429]3DVvxtjWlpK7iJlNNG/i7UCQfWqJOMZfm6wrEczf8iQ=[/tex]或[tex=1.571x1.5]F/WunXUdduCPv2NHt34x/MspATDOtsA3o4KSQ+F31/8=[/tex]值:
举一反三
- 试求: [tex=3.143x1.5]Tv+/hSX94jf24JOWV86mBRmEGOP4NnHAG3qHcGEoP4w=[/tex]物质的共轭酸或共轭碱的[tex=1.571x1.429]3DVvxtjWlpK7iJlNNG/i7UCQfWqJOMZfm6wrEczf8iQ=[/tex]或[tex=1.571x1.5]F/WunXUdduCPv2NHt34x/MspATDOtsA3o4KSQ+F31/8=[/tex]值:
- 试求: [tex=1.5x1.214]b8ft5GCIDsLmOfkr9/sFoPSacgBNR/UZ4FTQNADSpB4=[/tex]物质的共轭酸或共轭碱的[tex=1.571x1.429]3DVvxtjWlpK7iJlNNG/i7UCQfWqJOMZfm6wrEczf8iQ=[/tex]或[tex=1.571x1.5]F/WunXUdduCPv2NHt34x/MspATDOtsA3o4KSQ+F31/8=[/tex]值:
- 试求: [tex=2.857x1.429]s5585mNM9pQJZCWdE9VtPXFvUviSGu0m/V7bd+tI/TY=[/tex]物质的共轭酸或共轭碱的[tex=1.571x1.429]3DVvxtjWlpK7iJlNNG/i7UCQfWqJOMZfm6wrEczf8iQ=[/tex]或[tex=1.571x1.5]F/WunXUdduCPv2NHt34x/MspATDOtsA3o4KSQ+F31/8=[/tex]值:
- 【单选题】设X为连续型随机变量, 其概率密度: f(x)=Ax2, x∈(0,2); 其它为0. 求(1)A=(); (2) 分布函数F(x)=(); (3) P{1<X<2} (10.0分) A. (1)3/8; (2)x<0, F(x)=0; 0≤x<2, F(x)=1/8x³; x≥2, F(x)=1; (3) 7/8 B. (1)5/8; (2)x<0, F(x)=0; 0≤x<2, F(x)=1/8x³; x≥2, F(x)=0 (3) 1/8
- 假设“☆”是一种新的运算,若3☆2=3×4,6☆3=6×7×8,x☆4=840(x>0),那么x等于: A: 2 B: 3 C: 4 D: 5 E: 6 F: 7 G: 8 H: 9