行列式 https://assets.asklib.com/images/image2/2017051114533076699.png 的值为()。
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已知行列式D= https://assets.asklib.com/psource/2015110316140880817.png ,则A11+A21+A31+A41=()。
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https://assets.asklib.com/psource/2015110509173263996.jpg https://assets.asklib.com/psource/2015110509173368846.jpg https://assets.asklib.com/psource/2015110509173466893.jpg
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微分方程 https://assets.asklib.com/psource/2015110116014788369.png -4 https://assets.asklib.com/psource/2015110116020651779.png ′+5 https://assets.asklib.com/psource/2015110116020651779.png =0的通解为 https://assets.asklib.com/psource/2015110116020651779.png =()。
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设行列式 https://assets.asklib.com/psource/2015110316105097137.png ,Aij表示行列式元素aij的代数余子式,则A13+4A33+A43等于:()
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下列哪项不属于口腔器官()。 https://assets.asklib.com/psource/2015090915593930516.jpg https://assets.asklib.com/psource/2015090915594960972.jpg https://assets.asklib.com/psource/2015090915595746460.jpg https://assets.asklib.com/psource/2015090916000549371.jpg
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https://assets.asklib.com/source/38811447839673723.png https://assets.asklib.com/source/21771447839683358.png https://assets.asklib.com/source/37171447839689839.png
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https://assets.asklib.com/source/1473055371137024152.png 、 https://assets.asklib.com/source/1473055385722092841.png 、 https://assets.asklib.com/source/1473055399690044180.png 、 https://assets.asklib.com/source/1473055413490018042.png 、()
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设行列式D 1 = https://assets.asklib.com/psource/2015102617170680551.jpg ,D 2 = https://assets.asklib.com/psource/201510261717089132.jpg ,若D 1 =D 2 ,则λ的取值为:()
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如果行列式 https://assets.asklib.com/psource/2015110116051944969.png ()
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行列式 https://assets.asklib.com/psource/201510261712353888.jpg 的值是:()
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请判断下列符号表示何种二级管。 https://assets.asklib.com/psource/2015061816500188250.jpg https://assets.asklib.com/psource/2015061816501092569.jpg https://assets.asklib.com/psource/2015061816501236941.jpg https://assets.asklib.com/psource/2015061816501482045.jpg
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设10阶行列式 https://assets.asklib.com/psource/2015102914240924897.jpg 则D10等于().
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(2010)设A是m阶矩阵,B是n阶矩阵,行列式 https://assets.asklib.com/psource/2015110316065833270.png 等于:()
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1https://assets.asklib.com/source/1470361829907038628.png https://assets.asklib.com/source/1470361792608072582.png https://assets.asklib.com/source/1470361800727081642.png ( )
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如图,下面解剖标志正确的是 https://assets.asklib.com/psource/20140512093522905.jpg https://assets.asklib.com/psource/2014051209353999618.jpg https://assets.asklib.com/psource/2014051209354354276.jpg https://assets.asklib.com/psource/2014051209354796747.jpg
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列式计算ρ 20 。 https://assets.asklib.com/images/image2/201705091008037219.jpg
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计算题:要发现轨端第一孔第一象限的螺孔裂纹,必须保证轨端B值范围(如图1所示)耦合良好,按图中提供的条件列式计算B值。如果轨端掉块擦伤长度大于B值,应采取什么办法加强检查?(已知螺孔中心至轨端距离L=66mm;螺孔中心至轨面距离H=83.5mm;螺孔半径R=15.5mm;裂纹与水平方向夹角37°;探头折射角β=37°)。https://assets.asklib.com/psource/201502111500231224.jpg
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0,https://assets.asklib.com/source/1470294789860044047.png , https://assets.asklib.com/source/1470294797629070776.png , https://assets.asklib.com/source/1470294805275061167.png , https://assets.asklib.com/source/1470294812835026599.png , ( )
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行列式 https://assets.asklib.com/psource/2015110116043324206.png ()
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设4阶行列式 https://assets.asklib.com/psource/2015102914251882239.jpg 则D等于().
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计算n级行列式 https://assets.asklib.com/psource/2016030117443493127.jpg .
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https://assets.asklib.com/source/1473040973362041513.png 、 https://assets.asklib.com/source/1473041148171008214.png 、 https://assets.asklib.com/source/1473041081070030054.png 、 https://assets.asklib.com/source/1473041081093013547.png 、()
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