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信号与系统(中国石油大学(华东))智慧树知到期末考试答案+章节答案2024年中国石油大学(华东)零输入响应由强迫响应及自由响应的一部分构成。(
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答案:错data:image/png;base64,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
答案:错所有非周期信号都是能量信号。
答案:错data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAUwAAAAjCAYAAAD/uzNkAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAA2hSURBVHhe7Z3NixPJG8ef/P4ARTwLohkPw4ggekm8rLDojBcvjm+HuUiCIirLur4NiDgqvoDJwdUZFBQENV7mksQXUFAnl/Xggrpion+BL/gX5FffSlWmp1NdXd1dnYy79YEiSXV1dVf11LfrqefpnkybQQ6Hw+EI5X/i0+FwOBwhOMHsA5lMRnxz9AvX5440cILpcDgchjjBdDgcDkOcYDocjkh8/vxZfPvvMVgveatOxYlZGr4zTYezIi8WdSoXP9Kao4dpNFE96YD1NFvdXC9maGxG/PBQqLVpelT8iA27Hpkx6qm+UKN28sr7is0+1/H161fau3cvXbx4kdatWydyg3n16hVt2rRJ/Arm1KlTtHbtWtq1a5fICQYCtmrVKvErPjjWiRMnQtuBvt2/fz+tXLlS5ITz7Nkzfo5//vmnyAlnenqafxaLRf6pAmVWrFhBY2NjIiddBiaYrXKRJo68pZHaHTbQk6tcq87qG2P1lVh9ydTXOmkIph2B1NMq52noSGOwgslvqlM002DnwclRrjBOkyE3R12fQ+Ru3bolfiXj4cOH9Pr1a1q2bBk9f/48VGyy2Sxt2LCB1q9fL3LUHDt2jJd79OgRLV++XOSquXTpEj+PHTt2iJzo/Pjxg86fP08nT56kc+fOiVw16FvcIP744w+R0wHngfNW9fvWrVup1WrRkydPjMX9wIEDdP36dapWq4GCuHHjRt7/N27c0AqrNSCY/aZZyrEeLbRrTZFhi2apnWNNypVsV5wMm91cKxCvjwlm6nSuEztePw6moHt8Zcpp+wBldLx586b95csX8SsYJlq8rk+fPomcZGzZsqXNxEb8CgbHNCkHUC6svffu3RPfgkEdL1++FL+CCTo33XmYttsL+p4JuPjVC64fjoe6+0Xf1zA7sxaiUnPavvmcPUxzTFEaR4YoX26JTMdPSavMLJAG5Uo1Yrc/jEKWmlQrsVsip0EzY3mKe5kxEwybucF8xuwF5qcNk3eQ7N69m89uMbv+WWA3Kfrtt9/Er16ePn3KP5kQ889+0F/BFIOACpMJ1yw1jE4T00wmmhOxB5Nj8NQvV2ik1qa5w6M0/6eSpdHDc4RpdocGHblcF9/tMzU1xT9///13/mkLrOfBfNWlNCgUCqE3CVNUbUAe8OcjwRw34e+//+aftVqNjh8/3j1fCD3yvNy+fZvfzFTLIPfv3xffLNOZaPaDZptNDtgUOtdO3WIWpjmbnrCjDh6b3fwzmeT8XGPtW2sXtPvJv6Xg+pP2OUxT1MEGpMixw6BMcpP6UGbQJjn2R5+jPMxx7IMkl0bk0gKWSGRZWUamnTt38m3Yxzb9m2HWLxMml5Qbp21p+2Sy22gcllvjCKU4AXGkxihNa51MWVozIr6mhJxdYqaCGdK/EbQttZlYAuB9h7MLzic4lpDg0Fq9ejX9+uuvvMyVK1eIiSr3ussyMh08eJCXOXPmDP+0STTBZNPqerlMxXyeMpkiqbSoXsS2jG8NsUXlqU6wSm58m8fE6gVTd34MVk8+7ztGC+FDnfozmTwVA8UwS9u4YhLNTJXZ0RcrLdakMm9TnrWnZwkBHuI82pphbY3WCjv9uPjJDQ+Jb/aAiDx+/JjYTIW+f/9OS5cu5flY07RBmiY5zNag+rzHRdgS1jWRFqNoqsAaLEx0hFHhnMNClJYsWSK+WUTMNENReSx7vdEeU8lrDksTmSWdpYVj5OT+/jpqhW4dyu1+WPlOuT4sAYSA8+iFmZ3etiAt6DPfdtFxJia5rX4cnEkehuybAvumBucdB5h6y5Yt42adNMulmQrPOkxFfMaFzZK42RgGzqFarYpfelCfbC88xyqPPraH1edtqw6Ukya2NyEP2/z5SGi3yfKG3N8P8lA/wLXRtUVetyTXKYjof1XegawaDNiOweobpLy8oXjJgdoVZL5/rl0o1Tp1yvp0gmko0kB1MzBNJnqAcjqaPf2DG48Iu/KFSkVZw0zaj4tWMMV568LHsD0OWPdCgvD4BRMgH9tVg9oEUxE0CXmS4Fx07ZXrfWFiaFIGoFyQqAWdB8TOhmDi/PBd1z/yuqVB9DXM7Chtl07Ktx97zV22ffpOiXIja7qmd31WPjsyQmtC1y9bVK3wxU4ax2Jnq0z5sbdUas7RtPCYtj6+5SXJc4wesmvY0TrMzOptziw8r+xaxUk24rmzo0epEy3ToEqVmenly0R3RNgVQqXYceYihxVY6sdFSOfvqUCTlkMtECiNUJabN28GepORj/U1BIojGDvqY4KmT6R4jw/PMY4VNyTow4cP/LPRDf5PBhMkvlYYBZjPUZ7yCeLdu3fdY+PJJOlV92KrnSpiOX2GhvnoDgQhIeNHYypJq0p8nHNxxVMerC42yOfHhhQCNmS2D+jpE+vMr7k2KhN0mY4mD7v6t/ZjvUhjM7lOHK/IsgEescO6mMnTOlI0IWBsttkT7iJBnd51xLjpl19+4WuqcUVzbm6OO0xGRkb4kzEqkYmCyaOdfmQcK/oYNyYdupAl+TQPrgGcO+ibpO2JBJslRadrQirWkNi23AIzzLOuqVlz6iLrLpTYfoqnObqmdlhdnqUDneneB4y62bBdxia5hX40McmTLGfoTGo1nWtqsh/qNwWhKlgz9K95SdMuyEyV650oozK1sd2/nqiqC6amXJ+Lg84UBt51U9lW1ZM/QW2F+Yv9wxLagDpU25AQJoTtSEHmudzfD/JUfYS2+cOHUBb1pIFlwcT6pT8vmmBKQcixQb5QeAVdIQit6ecSTE8/6ZpmKpg2+nGxrWGiPmVbFOC8TYBwYMD5hQ2ECSaQZTBww5Bl/WKhE0ycn0rcvOgE4saNG1wgvWt+Urj89eraqnuUVN445M1DJXimBO0fJJhoC5xAXtIUzHhxmEPD1DEg39JHzyJmvThFNOk3laLEzNVJLnc2aJzuKBYI5XpoJDPyZ1ij65rQWBpOGgiVUj8OEDxSO0U1mrP4EhCE1rx48YKb13EffYR5ygSQvn37JnKCwfob2LNnD//0gjAwvxmaNPQHpirePnT37t0Fa6KIb8RSAuo1DZUKepQUSwQIv4LJj34AMP3DzG5b4NHJa9euiV/pYy9wvV5kf9CTSifI/JrnQoHtofWRlehQmDysEDkpBDmyGX6HwdiJSYye7MQwtqg88Z4m2RQKNCpVlpOAAfVjWvD3D1TUwh8HDHIM6Hw+zx0RKiGIwtmzZ7kohQFnEpslKdcAEWPoDb5GgrCxSQ1PJq9584I27tu3j7dP5Wi6evUq/0ziIMExsK4KcNOR8aryeP0QTVy7ONcP687oc4xhrOsGrUP7iSeYXQ90g9438Vmn4uxw4B901nCK2apWWI2MXImUPqP6bOddjSZPC3lEIyy4edBe8npxgt5jZj66nbhkNipUTaCYVvtxwPDX9jGxbM6phB8gQD/aXeuff/7hImfrHYoYsGF1Ybb3+vVr2rx5c+pOCtQPIYMoBgktRBuzTClyUfGLpV+00L9//fUXF6NBvHAYbQsC53769Gn+LDrGMPrp0KFDYqseCzNMNjvKT9Hw0aA/aEbXhJcCq6b5XnhtlbMijPOOGcmfFmqVqah7u0bzfUc0ZFjNIoI/DSWevumYmnJmLkO2OuFFHCYYUWexVvtxgHCxnGI3Yp1YspvN7Jpody2IRdJZZVQuXLjA3zWJmWOlUjGe0UQFpjs86hCxMG/2gwcPYr1DEgIIsYQZrhJLgDy5DeKFJQYIVT+AR113fXHDxKOWsn/widmm0fIEU9gYeB05+vcSdpgvH+zhlE6aIMfQvBOnUGPfQw7adVgM2OEDFnazt+96z2/+vAvtUgFB5gvPPtzpY68fB+n0mQ/mD0vqdmJbUkycPiZgfziFvE4T6cTANp3TxwRbTg6TtiIaAG2BM8lP0HlIJxOcQviuewIH5dAXqMubovQRnHi6srgOKCPbKq+PCYkF0zg0RA6AIAGTYS6BAlcTx+wVkV7MPM79AufhRQpRrqBqKxMx2U7FG5ZDBdNiPw5KMM3FkqWA+rEtKRhIqCdMRHRgcGIwqkRCDlQcQ4oJhAj5QUknVH6RiZp0bUU74I2Ghz/IWy7rUIF6ZVuRUI8qMkG2ww/yVCKIerENHn/ZP6hD1U9ecD3k+UA8dSLuJfZfFQZDtDg6KWLu9W5JCJ9h2iOpYA4SG32OAYh6gkQkDAgLBnnYYMSsDQIiw3KCUtDA1glVFFCHqq0QI4i5SuC8hJ0H+gNldP2J/VHGDwQwSARxXhBz7IuEfgwS9aTE62UmSGEmsRIpZCkPQDnQF8s41/0RRcUJphk2+hwDO2gmFAb2wcCPOnAhiDgu9pUJYgDhDaoLQqISmajoZo8m2DiPJPvj/ONeL1Mi/1XBXDINHlaRupgJUY7+FEl6OMHsPzb73OGQhHjJxfsY82VqiXcoTsxuTxQ8jBAeNhAT/T+WQPD+SPzDoEItxssqHA6HQ49WMFtl/HtT9qVxhIaGxqhCk1aetOCiWRuhyhBeXmtHNfEi3jw7x7elptWnQRwOh0OiFczstvFO/GQuxyZtdoUoOzpNc81JGp69bGGmWafq1HuabMZ5DdrPycxYGk8csRm6p07+P8kdDkeXDOxy8d2REhAf1839xfW5Iw0sPOnjcDgc/w2cYDocDocRRP8HK2EbcgHs3dcAAAAASUVORK5CYII=
答案:对data:image/png;base64,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
答案:错两个线性时不变系统的级联构成的系统是线性时不变的
答案:错单位冲激函数为偶函数。()
答案:对两个周期信号之和仍为周期信号
答案:错data:image/png;base64,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
答案:对若系统函数H(s)全部极点落于s平面左半平面,则系统为稳定系统。
答案:错
答案:对LTI系统的单位冲激响应h(t)=u(t-2)不是因果的。
答案:对频域分析方法只能求解系统的零状态响应。
答案:对
答案:data:image/png;base64,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
答案:data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADIAAAAwCAYAAABT9ym6AAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAG1SURBVGhD7Zk/bsIwFMa/9CyBoeoJnBNQlk6s2cIIC1tv0CUZ260rUxecE4QTIAbsu7jPiVn6B9kRD7mVfxLCT2Hwp/fH8UdmCPwD7tz3nycJiY0kxBfdFMiyDFnRQOsWTaPdkytjpxYbqjYCwtSqD0wtYCrZP7k6vBlRR+zdEsgxX1S4n7jw2jhBTAxZgKhpxQuzEKIvLxgx1Bcb/EIssqK3h3Ov8MDWI+1yidatMXtCRd2y3TFNLIJJiMbp8IaP86jVJxwgsJjnQ8wAkxCF6bPCBi8o7Bky2eJBvmPFpwPp7Tc2kpDYSEJiIwmJDa9zxF6MYuDSVtOBGBtJSGwkIbGRhPCh0TZLFEWGIsTMs+dIPFj7SPSui91aiPMSWUZyrLoOnarphh/GKCGj/NyWyoXL9yXChegG5RqgrMN0c+zKRxynjK6CJ+FCbunnBhAuZLZBLfZYl1RWFOarV1abxxvX9GF4+LmyGibP5U9lfvyXYYRfPH78hvq59HvvjY0QElRat/ZzQwgQcns/NwiXGQ+kkVJR1qlE+voWpqLYG8/S+t5bv/TRF9JVNzaSkNhIQuIC+AQXTz95+yl2WQAAAABJRU5ErkJggg==下列说法正确的是
答案:两个周期信号之和一定是周期信号
答案:data:image/png;base64,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以线性常系数微分方程表示的连续时间系统的自由响应取决于()
答案:系统函数极点
答案:已知因果系统的系统函数H(s)如下,属于稳定系统的是
答案:
答案:
答案:已知周期性冲激序列的傅里叶变换为,其中;又知;则f(t)的傅里叶变换为________。
答案:函数的单边拉普拉斯变换F(s)等于
答案:
答案:已知一个LTI系统的单位冲激响应h(t)如下图,若输入x(t)=u(t),则
t=1时输出y(t)=?
答案:3/2
答案:下列叙述正确
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