能量方程中<img src='https://img2.soutiyun.com/latex/latex.action' />表示( )。
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亥姆霍兹方程<img src='https://img2.soutiyun.com/ask/2020-01-08/94732463546788.png' />对下列哪种情况成立( )
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微分方程<img src='https://img2.soutiyun.com/ask/2020-02-15/950615032354502.png' />的通解为( )。
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电极反应<img src='https://img2.soutiyun.com/latex/latex.action' />的能斯特方程式为()。
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1.微分方程<img src='https://img2.soutiyun.com/ask/2020-03-09/952636097163919.png' />是( ).
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实验测得化学反应<img src='https://img2.soutiyun.com/ask/2020-03-05/952259955284323.png' />的速率方程为<img src='https://img2.soutiyun.com/ask/2020-03-05/95225996394296.png' />,根据上述条件可以认为( )
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下列一阶微分方程中,哪一个是一阶线性方程?<img src='https://img2.soutiyun.com/ask/uploadfile/2682001-2685000/cb0ccb9552efdb79335ff9442856fc3d.jpg' />
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在直线方程式的参数<img src='https://img2.soutiyun.com/shangxueba/ask/1731001-1734000/1731867/ct_cjtjfswz_cjtjfswchoose_00026(200911)1.jpg' />的表达式中,n是()。
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作变量代换x=Int简化方程<img src='https://img2.soutiyun.com/ask/2021-01-13/979381219766245.png' />
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试证明下列函数满足拉普拉斯方程:<img src='https://img2.soutiyun.com/ask/2019-06-18/929711665151155.png' />
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设X~N(μ,σ<sup>2</sup>),σ>0,二次方程<img src='https://img2.soutiyun.com/latex/latex.action' />无实根的概率为<img src='https://img2.soutiyun.com/latex/latex.action' />,则μ=( )
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某校通过调查、计算,建立了考试成绩倚学习时间的直线回归方程:<img src='https://img2.soutiyun.com/ask/2020-03-10/95272365711637.png' />=180-5x,该方程明显有误,错误在于( )。
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<img src='https://img2.soutiyun.com/latex/latex.action' />的特征方程为( )
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曲线<img src='https://img2.soutiyun.com/ask/2020-03-11/952816359188393.png' />的水平渐近线方程为( )。
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解方程:<img src='https://img2.soutiyun.com/ask/2021-03-04/983702960447469.png' />
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解方程<img src='https://img2.soutiyun.com/ask/2020-08-13/966159242822924.png' />
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在图所示的电路中,回路的方程是( )。<img src='https://img2.soutiyun.com/ask/6489001-6492000/1fdce6e35b3dcfa6a192f3238cbc8759.jpg' />
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求下列参数方程所确定的函数的三阶导数<img src='https://img2.soutiyun.com/ask/2020-08-06/965553991550217.png' />
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已知微分方程<img src='https://img2.soutiyun.com/shangxueba/ask/17664001-17667000/17666030/2015102914210098816.jpg' />的一个特解为<img src='https://img2.soutiyun.com/shangxueba/ask/17664001-17667000/17666030/2015102914210098816.jpg' />,则此微分方程的通解是().
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在力法方程<img src='https://img2.soutiyun.com/shangxueba/ask/18747001-18750000/18749360/2016071809192433999.jpg' />中,下列结论肯定出现的是:()
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设函数<img src='https://img2.soutiyun.com/shangxueba/ask/51060001-51063000/51061013/970054070213009.png' />求方程f(x)=0的根。
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过点M(3,-2,1)且与直线<img src='https://img2.soutiyun.com/shangxueba/ask/18729001-18732000/18730661/2016071514231735481.jpg' />平行的直线方程为()<img src='https://img2.soutiyun.com/shangxueba/ask/18729001-18732000/18730661/2016071514234648431.jpg' />
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过点(4,-1,3)且平行于直线<img src='https://img2.soutiyun.com/shangxueba/ask/17661001-17664000/17663979/2015102914564543541.jpg' />的直线方程为().
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设<img src='https://img2.soutiyun.com/shangxueba/ask/51291001-51294000/51293683/975264374908477.png' />是n维实向量,且<img src='https://img2.soutiyun.com/shangxueba/ask/51291001-51294000/51293683/975264387229182.png' />战性无关,<img src='https://img2.soutiyun.com/shangxueba/ask/51291001-51294000/51293683/975264401121976.png' /><img src='https://img2.soutiyun.com/shangxueba/ask/51291001-51294000/51293683/975264415373792.png' />是线性方程组
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求解差分方程:<img src='https://img2.soutiyun.com/ask/2020-12-17/977053448502449.png' />
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