求函数[tex=11.714x2.786]9QnoHT3J4YGMLp/fVlwtKTuRCaiAA5RVURekusfoWB7ZJdwbexkaJkMFlqrvZSFby0Nw1ntySU7dC8x3OgafNhUhWnMzLLHoTjSDyYPtfC8=[/tex]的导数

 简算下列定积分：[tex=11.714x2.786]TsAUIF3pWh7cpiVYYTU26UZHkOLxXRgxN3bfDP93Mzp0esB26v+KWkc/E+NxrpgWNOxN+2YAq+77AjKmKzMaEA==[/tex] 

用逆矩阵解矩阵方程：[tex=11.714x2.786]rwMhqGKFQ+j3l2qMx/grPmHQ9L3w1DsPSVf4DzW9TSTbMv98AJU/oa12zmhDdprNGBUpPAmybfg7AMtVUath4MgfECcgeTn9Lo29NN7QCTDeSvJNIX+XHsMOujEgg+6XB/82X8cJ26N4GYXJ+KOVWazlVmrp0RCjWn4uMBp96Bs=[/tex]

用逆矩阵解矩阵方程：[tex=11.714x2.786]075gCzZzsMRb6HYXYk9X913/rNbHBKZguNiz9GBr1LZv7ut9TtKd6rTnrcW9jNJHVraviBByUvUXrhLXR0jSnJ8gccp12BvDGPar8+IZu9VcddmBIonxV/Gd0MwV7U7sfu/LNZIM45K6pQ2bDydSUey/OsEUvODeRx0fjENZNNo=[/tex].

解下列矩阵方程，求出未知矩阵[tex=1.143x1.0]AVsxmGLKG/DKYxafM8rZUA==[/tex][tex=11.714x2.786]jcCMHflCR8OS9TosV6N5vJytC/ABE6vCy52RUkDTas8G/x3jHOvRFD+Crzr6WbXfd2jD7HukVp7+i/+oO5gAjaUKFP0Z79nJJGOdL0mou6cPXiW85PpxksUEsyV17ZDsfKv7dxsNBGl0POZ7/4gWQnDx8In26s3ljJpfJiDBEGc=[/tex]

解下列矩阵方程，求出未知矩阵[tex=0.929x1.286]uswT/CEcOIwMpCvTz/zeaA==[/tex]：[tex=11.714x2.786]rwMhqGKFQ+j3l2qMx/grPmHQ9L3w1DsPSVf4DzW9TSTbMv98AJU/oa12zmhDdprNGBUpPAmybfg7AMtVUath4MgfECcgeTn9Lo29NN7QCTB5M3X+NfFnJR1r29hY73EcUxwnjJk/pS848SppS88gDTVka6SAtKfw7+pIG/tDATc=[/tex]

设有一信号如下:[tex=11.714x2.786]k8ui6/AiO1t++sUi/7fdy3ZtWynAG8orm1d5eKboKouZ8KkndQyhEX/mkPyOBTJAdkkpeUSArIgCjnjuEem5o7mNxUPHNlaZA8cGWJB7jLNb6kI2f91iocswz4r0/Zce[/tex]试问它是功率信号还是能量信号,并求出其功率谱密度。

设矩阵[tex=0.929x1.0]JkZEjSnuwtkZlFnZMXvQ5Q==[/tex]与[tex=0.929x1.0]tyBXjkM4oPSZ1Sowfqs4Mw==[/tex]相似，[tex=0.857x1.0]8RcM9URbeKyAt/cfjRV5zw==[/tex]与[tex=1.0x1.0]O5CPuQXEJsyNSJWva3kllQ==[/tex]相似。试证：[tex=11.714x2.786]/qR30SZAMQQ0dPY7TQD1jQFtX2tnvPn5p2CDEJQ2wgLSzlEMdEtJY/n3bOKt6M0lNTtcPMwLGVUW1OVR/0BbHHuDYbnmg2tZ1N2WZ12W4uMXxvrT48g3M8jBqwr6yEY78iy7tL8tSPkihjV/KpzWc7v8H03NC9o4wStH0G4qxMo=[/tex]

 已给数量场[tex=3.714x2.357]b2GVrWyS2r9ueu7TNy+PYRvAnEPbAzUUqQUbSLsqliI=[/tex] 其中 [tex=11.714x2.786]t1ydBnMkvUrdvfcBfbbebIG4d0F4CBJNKYROzD7BkGtjsdHET2F8ApM9sbDVCE2t[/tex][br][/br]试求在空间 [tex=2.357x1.214]ESP8SW599eO30FOmmhzluw==[/tex] 的哪些点下面等式成立[tex=5.214x1.357]FFxUYTfb66uegJ8r7lBBYmPxL6cizc3XIXx/VQOp2Lw=[/tex]

判断以下各集 [tex=0.857x1.0]8R0gNFOiWLE7jtLTMNrZAg==[/tex] 对于规定的十、[tex=0.286x0.786]9EdWKBFmcvEdWPV3/YDcuw==[/tex] 说是否作成域. [tex=11.714x2.786]dGKRdnwceRAg//LTnnOr6+3ta3dxFlD1/94I6PTeqxCbXiQMbCOQZGpeFGdpNQG4zlvzT8sgXUOJJ/H4xbvSGrLUiN/6MHmPBoP+PJOL0oOsWPJdGYHBbusFLu2Iw0gQ4F6APKvsOxxX4Of+ZCB87A==[/tex]+: 矩阵加法, [tex=0.286x0.786]9EdWKBFmcvEdWPV3/YDcuw==[/tex] : 矩阵乘法.