设二维离散型随机变量 [tex=2.643x1.357]DJUMdJyw8QoCXHzomLtAYg==[/tex] 的分布律为[img=310x184]1782c45e496ae32.png[/img]则( ).
未知类型:{'options': ['[tex=5.0x1.286]zLVJVkmL/45WYF83JLyXMe21H2Kjj6WC2vrFoE8WAik=[/tex];', '[tex=4.0x1.286]v0FWN7zLeekmR1cjFIgvCw==[/tex];', '[tex=5.0x1.286]71NcTCwnE6Cy02Ix1bHH3jdCPYZ8wt08fszUtm/RKe0=[/tex];', '[tex=6.929x1.286]snsLIrf7nUv+zd7AaOj1xl9eUVhq/Wq5ngwlnwgwd4E=[/tex].'], 'type': 102}
未知类型:{'options': ['[tex=5.0x1.286]zLVJVkmL/45WYF83JLyXMe21H2Kjj6WC2vrFoE8WAik=[/tex];', '[tex=4.0x1.286]v0FWN7zLeekmR1cjFIgvCw==[/tex];', '[tex=5.0x1.286]71NcTCwnE6Cy02Ix1bHH3jdCPYZ8wt08fszUtm/RKe0=[/tex];', '[tex=6.929x1.286]snsLIrf7nUv+zd7AaOj1xl9eUVhq/Wq5ngwlnwgwd4E=[/tex].'], 'type': 102}
举一反三
- 若随机变量 [tex=1.857x1.214]drqhrkQv+rX/M+8NJCSetQ==[/tex] 满足 [tex=8.643x1.357]KJm+7IM629ANM/IY9WhLGhzMaWdJAOWz2jwH8CiqECA=[/tex] 且 [tex=5.214x1.214]ON9/Xi+t1ZGlFRnEVPB6rQ==[/tex] 则必有( ). 未知类型:{'options': ['[tex=4.0x1.286]v0FWN7zLeekmR1cjFIgvCw==[/tex];', '[tex=5.0x1.286]71NcTCwnE6Cy02Ix1bHH3jdCPYZ8wt08fszUtm/RKe0=[/tex];', '[tex=3.429x1.286]IQNjLq8UhOCVzBKMQ7A33w==[/tex];', '[tex=5.071x1.286]KUcDNNS7yuymvx6R8v5e4Q==[/tex].'], 'type': 102}
- 已知[tex=5.0x1.286]nNRgYScRPw16N2lBJqtTsA==[/tex],[tex=5.0x1.286]ZIJz5gTGIgdeWAGMFdoL1A==[/tex],则[tex=6.214x1.286]wE5wtWoL9HR6uGPZrIzvHA==[/tex]成立的[tex=0.571x1.286]XubEW9+1+hkJqH7jXe5MrA==[/tex]值为 A: 1 B: 2 C: 4 D: 6 E: 8
- 假设所有变量均为整型, 则表达式[tex=10.571x1.357]LwbIklUNi3bG92VfuhR/2s2h8bPim4KlwMHG5pBJ+3PKMuWS/4OGtcmSMjC2vxzVyrIKC8OVgBRFsqcS0s1A1u2X9g+VlWD58VLIpTfy7/0=[/tex]后[tex=0.571x0.786]FLCxr+5eRIYnIT0kyTRrXg==[/tex]的值为 未知类型:{'options': ['7', '8', '6', '2'], 'type': 102}
- 设[tex=0.786x1.0]b4HkKtHXeHofHX/gJc8Agg==[/tex]为 3 阶矩阵,且[tex=2.643x1.357]UmLV2A1CdZWQv7CRGUJlsA==[/tex],则[tex=2.643x1.357]KoGZ1RDPPY3DFvVdN0xWqg==[/tex]( )。 未知类型:{'options': ['4', '8', '16', '32'], 'type': 102}
- 设[tex=0.786x1.0]b4HkKtHXeHofHX/gJc8Agg==[/tex]是 3 阶矩阵,且[tex=2.643x1.357]h0pLE8vvleI3SS/lZLfCsw==[/tex],则[tex=4.143x1.357]TzVoItsLVWI00YVI4rvLQQ==[/tex]( ). 未知类型:{'options': ['2', '-2', '8', '-8'], 'type': 102}