未知类型:{'options': ['[tex=7.571x1.357]G0V81YoBISkMKk2dCQOYjlFA65Ont7sPhUXeZmQdEWw=[/tex]', '[tex=7.571x1.357]uRZADgSiCHmjMwMYgWX0suTnhqQLbP0nqVxcPVNDq9o=[/tex]', '[tex=7.571x1.357]kWxJZnuiSer64TgdabJZGsPOSO7SLMbiUw1AcqBNq+g=[/tex]', '[tex=7.429x1.357]uRZADgSiCHmjMwMYgWX0suTnhqQLbP0nqVxcPVNDq9o=[/tex]'], 'type': 102}
举一反三
- 能产生正弦波振荡的必要条件是() [br][/br] 未知类型:{'options': ['[tex=4.071x1.5]ZHMXiER8ZaDxxsVT/bVH3+lsP/UBZFV5rlr3gMkTWAo=[/tex]', '[tex=3.786x1.5]X/dAPQG629Xxhzt6x5zsxXQwhBAICzqMGDmsrceVcnk=[/tex]', '[tex=3.786x1.5]X/dAPQG629Xxhzt6x5zsxUy/rK6N2R3d20utEgygqgQ=[/tex]', '[tex=6.214x1.5]4p1ea1IYayd4Z8XNUjoBPD5L7ZWp5rKrXhXmNG5YIgo=[/tex]'], 'type': 102}
- 若人群中某疾病发生的阳性数X 服从二项分布,则从该人群随机抽取n 个人,阳性数X 不小于k人的概率为( ). 未知类型:{'options': ['[tex=11.0x1.357]aeMEnsAGzP8M9tPwWdXlO2RYZDqmpq/IgdFOU3cQENU=[/tex]', '[tex=12.429x1.357]lwzRBONc+DMyaoPjZ2vMjX/mwCodWN+wb4UzayeLyAA=[/tex][br][/br]', '[tex=9.786x1.357]DtqCA8F3JzM7USKBWIvFo5o4tj5azOSdTZoHmgAqLzo=[/tex][br][/br]', '[tex=11.071x1.357]DtqCA8F3JzM7USKBWIvFo4QR7ARwNql5c20rCrMtWg4=[/tex][br][/br]', '[tex=11.071x1.357]n5kJv0D/JIKSB3GwYXd7uKmTPc6DdV+15Dsgh2y9eds=[/tex][br][/br]'], 'type': 102}
- 证明:设[tex=2.5x1.143]TiKXNJpck7QZybOVpHjBBQ==[/tex],则(1)[tex=4.071x1.357]XuP7RmUEJaAkHVU8iAv+9Q==[/tex];(2)[tex=4.214x1.357]AqKFQ399rus+wrghQrqZ2w==[/tex];(3)[tex=6.714x1.5]88w0pH97sf309OJM2l0ulfXdE4LOhDA5RyW64p7MDoY=[/tex]。[br][/br]
- 设[tex=0.929x1.0]9MCaa3NdBrky4bnBPtTtgw==[/tex]为四阶矩阵,且[tex=3.429x1.357]dYcL9NtiYXHAsxWaaTXNyg==[/tex],则[tex=3.643x1.357]K61mVROvnMmG4VfTKldoUJpacWgNjgbg3TOLujupPak=[/tex] 未知类型:{'options': ['0', '1', '2', '3'], 'type': 102}
- 固定化细胞培养系统[tex=2.429x1.0]mwzA4e0jywUAh7qXznk4ow==[/tex]工厂一次的细胞产量可高达[br][/br] 未知类型:{'options': ['[tex=7.429x1.357]C8WfDohelKj5/vo2O/RLgpIRTZnGqmIlrwT5a3fbpx4IVMZcyTAw+G7ZSLheCLDW[/tex]', '[tex=6.714x1.357]z6Q7zwmFCxwFr93v0jEBwCqxMkMyNIQGsdvuxYvsQ0rhK4UwJPQyyPM7mCgNxERo[/tex]', '[tex=6.5x1.357]PkJxCzFRgIWCf6rQtHlzSh1l1S4zUGktx1hnf4lizgTjrGgvmVEpA4nUhlppV67h[/tex]', '[tex=7.571x1.357]WD9pz4MFidb2roeslu5d3/VWBINCNN7YmG4/91vWTReaY6aaqysZY3hMqN0bXEmt[/tex]', '[tex=7.071x1.357]47xXmFKQtSgqrh2tv3tDFHQJ5G26lctCwImxokW0y0eLgSNbzd1lCuIiATL8+s9q[/tex]'], 'type': 102}
内容
- 0
设[tex=9.5x1.357]SCdQVrWYRKeQ0Kso5KLyNfk8JB3HucTnKoj2QqQW52U=[/tex],则必有 未知类型:{'options': ['[tex=7.571x1.357]lRm2kqS4yLOmX6XvhZBI1MMOeIpSVoq5FPlzI1huTsU=[/tex]', '[tex=7.571x1.357]fKyYgh5iQ4gaPCHvLLsKZN2SZPSRkaK+bm+wiPWYQu8=[/tex]', '[tex=7.0x1.357]v/2XpDamWIXmyaJsDwwPnfI4gRjoMC/phakvDwZvfuQ=[/tex]', '[tex=7.0x1.357]DafENReqtFIaKBxGVhAdBSEmwoGHucy+aVbPaAv8CA8=[/tex]'], 'type': 102}
- 1
设 [tex=2.0x1.214]vnzjVhyzo/NIhVUgFyjLlA==[/tex] 是两个事件,且 [tex=7.571x1.357]fYwQx8MjevmYzGfMaXl4qHkDhbl16mogmlCoUVHMkWk=[/tex] 则有( ). 未知类型:{'options': ['[tex=7.0x1.357]3pP+ufdfQbtfjkPfLnazKyQBmycI2E/aKNoM/1D7BPk=[/tex]', '[tex=4.071x1.286]0dWj8T/+DsrOkCyekCxjkw==[/tex];', '[tex=7.571x1.357]J0U187HfFa85xWuq2VcFUNNOeVZx0HrXlqqfjGUyobM=[/tex]', '前三者都不一定成立.'], 'type': 102}
- 2
对于[tex=1.357x1.0]u+3iXr3D6v75hlJoxGgbhw==[/tex]触发器, 输入[tex=7.929x1.214]myYnUe6GtSV0QoSNXsewaA==[/tex]脉冲作用后, 触发器的次态应为 未知类型:{'options': ['0', '1', '\xa0[tex=0.643x1.214]4ssBDc1re7hhNB3dpzYmRg==[/tex][br][/br]', '不变[br][/br]'], 'type': 102}
- 3
若事件A 和事件B 互不相容,则一定有( ). 未知类型:{'options': ['[tex=9.5x1.357]Hn01j2E0ciawmSXyf9QQ4zbkH+lyPta5komkQJB8EJk=[/tex]', '[tex=7.429x1.357]mFebSyCYmk126QVBA5hGvA==[/tex][br][/br]', '[tex=8.643x1.357]l/co8ff/yNhaiq/xpEueO+vUxWHOeHI3yGmSD1o9Xpk=[/tex][br][/br]', '[tex=6.214x1.357]4l3fLuNpZGe36n54b5osDOZpSf6Oe0UcnrRTfZXV7Pw=[/tex][br][/br]', '[tex=6.571x1.357]jIiDWJ4SWDXCheNMO+vUln21/yMZVUKLz0LKFUrO9cA=[/tex][br][/br]'], 'type': 102}
- 4
产品[tex=0.857x1.0]N7iCrOsS+NNEUUlnsYCi1g==[/tex]和[tex=0.643x1.0]O+viFNA0oHTwnBtQyi80Zw==[/tex]是互补品。需求函数;[br][/br]$Q_{X}=640-4 P_{X}-P_{Y}, \quad Q_{Y}=\frac{1}{2} Q_{X}-\frac{1}{2} P_{Y}$\ \假定两者短期供给是固定的:[br][/br][tex=7.571x1.214]CfZnuLHqwTFF3JM+8Dj0b8jBQ/cIxAsLu6pTzTLTHBE=[/tex]求:这两种产品的均衡价格为多少?