比较定积分 与 的大小( ).http://img2.ph.126.net/QOSwmqjGFM8XXWHL7GR72w==/6630591677163742688.gif
求下列依赖于参数的不定积分:<img src='https://img2.soutiyun.com/ask/2020-03-06/952339842026776.png' />
求下列依赖于参数的不定积分:<img src='https://img2.soutiyun.com/ask/2020-02-12/950394499913159.png' />
如图所示变截面梁,用积分法求挠曲线方程时应分几段?共有几个积分常数?下列结论中正确的是: A.分2段,共有2个积分常数 B.分2段,共有4个积分常数 C.分3段,共有6个积分常数 D.分4段,共有8个积分常数<img src='https://img2.soutiyun.com/ask/uploadfile/2751001-2754000/b99abfab0c46241d38cb1f906f2b5951.jpg' />
积分∫1/x√x<sup>2</sup>-1dx=()<img src='https://img2.soutiyun.com/ask/2021-01-22/980173798513878.png' />
求不定积分:<img src='https://img2.soutiyun.com/ask/2020-02-22/951216451032901.png' />
判断下列各广义积分的敛散性,若收敛,计算其值:<img src='https://img2.soutiyun.com/ask/2020-02-20/951076511215764.png' />
利用分部积分证明:<img src='https://img2.soutiyun.com/ask/2021-01-25/980415524997009.png' />
求定积分<img src='https://img2.soutiyun.com/ask/2021-01-14/979464931491955.png' />
峰值<img src='https://img2.soutiyun.com/ask/uploadfile/5970001-5973000/8d4852392c221c60445bf45e0af0a2ed.png' />吸收是随着积分<img src='https://img2.soutiyun.com/ask/uploadfile/5970001-5973000/d5f3b52d38cafebcaa4674016bc2e89a.png' />吸收的增大而增大的,同时还随着下列哪个因素的增大而减小?( )
计<img src='https://img2.soutiyun.com/latex/latex.action' />,则这两个积分和数1的大小比较为( ).
求下列依赖于参数的不定积分:<img src='https://img2.soutiyun.com/ask/2020-03-06/952339684693443.png' />
求下列积分,应用分部积分法:<img src='https://img2.soutiyun.com/ask/2019-12-19/94561968946154.png' />
设a、b为常数,则反常积分<img src='https://img2.soutiyun.com/shangxueba/ask/18729001-18732000/18731251/2016071616291426579.jpg' />()
已知矢量A=ti-2tj+lntk,B=e'i+sintj-3tk,计算积分<img src='https://img2.soutiyun.com/ask/2020-09-23/969723435954376.png' />
下列定积分中,哪一个等于零?<img src='https://img2.soutiyun.com/ask/uploadfile/4245001-4248000/cf2151746698f8c63470de4580607b14.jpg' />
设D={(x,y){x<sup>2</sup>+y<sup>2</sup>≤4),二重积分<img src='https://img2.soutiyun.com/shangxueba/ask/18726001-18729000/18727910/2016071616340816183.jpg' />,则()
设C为不经过a与-a的正向简单闭曲线,a为不等于零的任何复数,试就a与-a同C的各种不同位置,计算积分<img src='https://img2.soutiyun.com/ask/2020-12-14/976804476359472.jpg' />。
设L是从A(1,0)到B(-1,2)的线段,则曲线积分<img src='https://img2.soutiyun.com/shangxueba/ask/17670001-17673000/17672554/201510271143115588.jpg' />(x+y)ds等于:()
求不定积分:<img src='https://img2.soutiyun.com/ask/2021-01-13/979403568074495.png' />
求不定积分<img src='https://img2.soutiyun.com/ask/2021-01-13/979402944371821.png' />
计算积分:<img src='https://img2.soutiyun.com/ask/2020-12-16/976984209185911.jpg' />
在等温定压下,下列两个反应方程式的反应热相同。()<img src='https://img2.soutiyun.com/ask/2021-03-23/985342921455391.png' />此题为判断题(对,错)。
用Γ函数表示下列积分,并计算积分值<img src='https://img2.soutiyun.com/ask/2020-08-11/965988508368335.png' />