• 2022-06-30
    刚架的[tex=4.571x1.286]NSKjTj7psZYdOS6Y0a7ZyA==[/tex],横梁温度均为升高[tex=0.429x0.929]r8lLiDb0KHTzu/2y/Au89w==[/tex],两柱温度不变。试绘其弯矩图。[img=342x276]179d158918e1afe.png[/img]
  • 此体系为对称结构,故[tex=2.571x1.286]CRtqBAhqN5cuf4nLj/W8Qw==[/tex] 两端转角相同,设为 [tex=0.857x1.0]23729DdJmVDFhDf/EsK54Q==[/tex]。绘出 [tex=3.0x1.214]WTxG4Wxfl0z6mQd6wlP6QQ==[/tex]图。[img=711x255]179d1593245eac4.png[/img][tex=8.071x5.214]Ck4j1YFlvVH5wCAykOEMiyz7LTvFhr/yDls8oXJU0YtpUGVk91waZ2vPhHAZ5OEAXWJctyiAqFGjk6Q1Ii6VZt07zh73Y8BLasKjs7KGEk2mH0YEaKMKxGW47jbcWdF6EodSY3MYZQe2fKE1seY6uQ==[/tex][tex=14.714x5.143]HW0fO0bOXGtvjnUdcuV4wPlFlCKgIM2hZbHxos3ppNLIH07eeHpk1ckbrtdBJL0GqwtschiGYaeScYlGPp4as6MnVAHB4yZ5eCO6pcygO17EffaSW5gYNaI8SNxV9Mmof1GVRgaOxXUDRwMyFZxlqN4oL3NSKfABTRNp0FaNJk60b2mKotPTOt0QunVTbVUyWXXpzcnI1l6ewiro3gs2hnSk3veDIbMRje+nVJt7b8c=[/tex][tex=24.071x6.071]Ck4j1YFlvVH5wCAykOEMixW+iR+Je9p1gr2aA2iY9O71YpDtN7oAlh0m6xEvje2BZsX5b1MX9tkLRPxnT58K1FK7kD3PxrtGUm5Q+IhPkBxq69NwfOGeeSl4Gji1ntvzW2RGigR1EsQ2CscuOIcPQYF6vD+/IY3gT2qU9+nGjcLFg/F18SPKom9Dkp8jJNQmQw5iRpJTGxTxN6PszuJT6HQXuLoTUKG3AYOsGZFc3xChl328PmLEkzKyNvmPZJaMvoFuQFuc+3lwaX89ramphSX7qAd7U2LMGIhC5DKdLU4XYfk+tVV8wJOzqY+X6tj75Pu4YLx/xPQBUeaFpVvd2Tbl4RohLncdGFRfJtmgztAX4kFui0UovpW87qLw8jYV[/tex][img=256x247]179d15a094fe4f9.png[/img][img=393x258]179d15a2d3411ed.png[/img]

    举一反三

    内容

    • 0

      int x = 1, y =6;  A:  x = 6 y = 0 B:  x = 7 y = 0 C:  x = 6 y = -1 D:  x = 7 y = -1 E:  Compilation fails.

    • 1

      多元线性回归分析中,[tex=0.643x1.0]J+LW/0i6Fe+lWEmBUgT8zg==[/tex]检验与[tex=0.429x0.929]r8lLiDb0KHTzu/2y/Au89w==[/tex]检验的关系是什么?为什么在作了[tex=0.643x1.0]J+LW/0i6Fe+lWEmBUgT8zg==[/tex]检验以后还要作[tex=0.429x0.929]r8lLiDb0KHTzu/2y/Au89w==[/tex]检验?

    • 2

      用弯矩分配法计算图5-30所示结构,并作[tex=1.071x1.286]/vZEgalrrOYkhzS9SMg+fg==[/tex]图。[tex=4.571x1.286]NSKjTj7psZYdOS6Y0a7ZyA==[/tex]。[img=502x307]17a038c4cac6a5d.png[/img]

    • 3

      求[tex=0.429x0.929]r8lLiDb0KHTzu/2y/Au89w==[/tex]的值,使二次型[tex=22.429x1.571]JLm2GSM4LZ595FWooMQMWd9gmISBtAIl+HEGB8g2d0ZGTMu6wTejMoVJxYJ8fuDc6KTvHLIs8fmn9Ob44d1o0JLs6vUcKAeXqPXRXpHZrZ0=[/tex]是正定的。

    • 4

      设随机变量(X,Y)的概率分布列为[img=345x154]178ab1c9ce3bc1b.png[/img]求[tex=1.571x1.0]JUrGU6ftUjxQCIr6CyfDwQ==[/tex],[tex=1.357x1.0]yL/7/hhyqgwzAX8jnIq3OQ==[/tex],[tex=4.357x1.357]LN0xwhQHSOeLwBClUlpHQw==[/tex].