设[tex=1.857x1.357]bZ4KhrFbnCaidqbMGQZfww==[/tex] 为连续函数, [tex=13.286x2.929]3THQm8nisFtPrJNjIDeykvf4LQYHB3QlOmeuqbspil1MyURk8Y9EcAVfh9pw1s/tvAZYitsW4MECdJxmJAzgUROwbFhUYgs7Na34UG6UZNw=[/tex], 交换积分次序后化为对[tex=0.571x0.786]ZKO2xs0EgSemzoH7MSmYTA==[/tex]的定积分,则得[tex=2.571x1.357]YQmFeqxWCiwouOtVYpeUOQ==[/tex][input=type:blank,size:6][/input]于是[tex=2.929x1.429]gvIKquLFq+oeaqnvECEcd0H7SFnnPy36IO9exOJw7Vc=[/tex][input=type:blank,size:6][/input]

2022-06-09

设[tex=1.857x1.357]bZ4KhrFbnCaidqbMGQZfww==[/tex] 为连续函数, [tex=13.286x2.929]3THQm8nisFtPrJNjIDeykvf4LQYHB3QlOmeuqbspil1MyURk8Y9EcAVfh9pw1s/tvAZYitsW4MECdJxmJAzgUROwbFhUYgs7Na34UG6UZNw=[/tex], 交换积分次序后化为对[tex=0.571x0.786]ZKO2xs0EgSemzoH7MSmYTA==[/tex]的定积分,则得[tex=2.571x1.357]YQmFeqxWCiwouOtVYpeUOQ==[/tex][input=type:blank,size:6][/input]于是[tex=2.929x1.429]gvIKquLFq+oeaqnvECEcd0H7SFnnPy36IO9exOJw7Vc=[/tex][input=type:blank,size:6][/input]

答案：

解  [tex=20.571x2.929]3THQm8nisFtPrJNjIDeykvf4LQYHB3QlOmeuqbspil1MyURk8Y9EcAVfh9pw1s/tvAZYitsW4MECdJxmJAzgUZe59DfuzHMmylLL0oErgP0wzXdGuso7hEcvKsSdPrhikuarYaqoAnoV6qq3GkRTQg==[/tex],其中 [tex=10.214x1.214]lQk37EutnZ3w+q+j/K0SVPH8tz8e97iswsEseLdd44e4df066DOApp2kWTrBepGd3KcsghDb2TNNdU3BTwjttg==[/tex](图 9-38) .将[tex=0.857x1.0]PvQ1rNj9zmhWbdNmDhnQhA==[/tex]改写为:[tex=8.786x1.214]U1Etjc20z5GvorydP/h9JNZu/+seHHyUV3XqyDcoN33GfpTYF3bYJw3J5z0u/eh8o84zlhiZpj1yCvjgPo44cQ==[/tex], 改变积分次序得[tex=18.643x2.786]3THQm8nisFtPrJNjIDeykvumDgKcB/pTAUZMhoaiihygSu2oPZSZjLkVSCQ4AU/HOPJc68U0WICayz4VOTSWrjTAci3fYax/2z/qk5PYpEwcR8k7njN3ZSOul1q2x2viRnkTkomVXIf54GEFWYn7/Q==[/tex]于是[tex=8.0x1.429]tf5OZ2EASJ6rIqftIVKurAtwGUUko2G43YNRdiT4C9g=[/tex].[img=377x408]1792b9bf63ecbef.png[/img]

举一反三

内容

0
[tex=1.857x1.357]bZ4KhrFbnCaidqbMGQZfww==[/tex] 二阶可导, [tex=6.0x1.357]7uK7DvrGdGMFo+AgMn8Okw==[/tex], 则 [tex=1.571x1.357]AlvHPx/LzcsIUKOnHor/SA==[/tex][input=type:blank,size:6][/input], [tex=1.786x1.357]eE9dXkpN2effVrNkAbXJmClGvj/EWFaJcsc0DJCFeuY=[/tex][input=type:blank,size:6][/input].
1
设 [tex=7.571x1.5]X32BZkoASxbtb2aaoJs9nwAvjYcMuPJUvFsmJHSoMdA=[/tex] 则 [tex=3.714x1.357]jTuwFgZbVUVcMCQxXMCSFg==[/tex][input=type:blank,size:6][/input], [tex=3.714x1.357]dlNw340IBx3UQOWcQr2QgA==[/tex][input=type:blank,size:6][/input]
2
指出下列电磁辐射所在的光谱区(光速为 [tex=6.429x1.5]1/2H66qmeWP9GenrBNTr2ZhpKiB6H1DdgqtszgSMkTvraIr8dWHn2x3yptmT5H2n[/tex] ) :(1) 波长 [tex=3.714x1.0]StDJXnR43RPspiIKObZzuw9O/dLrVHZu8RJRRAY8kSU=[/tex][input=type:blank,size:4][/input]; (2) 波数 [tex=3.714x1.214]8VzQUldHmwJWvVKk4pz6jk4Am8tzuR2InQyVnni/Bbo=[/tex][input=type:blank,size:4][/input];（3）频率[tex=5.143x1.357]uZDMs7g7gUrO1odXQeZ4JgUgtCwdZjGo6H7tPYh7EJh/4QDeDY5W0+Pdyym88s5X[/tex][input=type:blank,size:4][/input]；(4)波长 [tex=2.929x1.0]fh1smEHXU8S6milYZ79dbP7Y0MTZvW00Ph9YYS+SEPk=[/tex][input=type:blank,size:4][/input]。
3
设[tex=5.929x1.357]nnvzDsYcnwLXbwMHFnzEfw==[/tex]上的关系[tex=18.714x1.357]pRPKeMnnTLFG2Kh2Rzoh8h40RRRV+CaSg6kqSmugeF0=[/tex],则[tex=2.786x1.357]dBJ53wjCR4BUShh51aTCDQ==[/tex][input=type:blank,size:4][/input],[tex=2.786x1.357]QOYvZ5w7XzS9DAvsdrAuIQ==[/tex][input=type:blank,size:4][/input],[tex=2.714x1.357]DnLu14MlZOhinqiEtPtcpQ==[/tex][input=type:blank,size:4][/input]
4
图题 3-2(7) 所示结构中，[tex=2.857x1.0]yIVMj0iMJ3CRpMGZqISVEQ==[/tex] 则[tex=2.857x1.214]Xg0xb/zomzZU1Pxkp2VV2A==[/tex][input=type:blank,size:4][/input],[input=type:blank,size:4][/input]侧受拉; [tex=2.857x1.214]AvHUaXJ2wHHdFB4dRK5+2w==[/tex][input=type:blank,size:4][/input],[input=type:blank,size:4][/input]侧受拉。[img=316x188]179c26bc7b822d3.png[/img]