• 2022-06-04
    设[tex=2.643x1.286]1Hu3J6L7ix9b4TuPkzZg9w==[/tex]的联合密度函数为[tex=16.714x2.929]k577xRm0ZOCUJhn0k/ylevdeQMRjBzLLf+gr+H41+NANbNRZMMPF8tv8qDNgdi5Ip1Q2t0QgHqWKMXj3hSh8v5LbSprJfFr+IledVD/fFUpbjt2/KCwM4ddddJFIIV3yWKdGMmeayM4dJbZqVEpPNQ==[/tex]试求[tex=3.714x1.143]8eFZ+Fzi77e5CZAmFKOeCQ==[/tex] 的密度函数.