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  • 2022-06-05
    求函数在给定点处的偏导数:设[tex=9.643x1.5]Kb/0txtNTts85W8aj1BmLldLa9MzICnp4jySKl1C1jsAnoEa+t3znRQHOzebybos[/tex],求[tex=6.571x1.571]49UFtdxdDKQlKWZMhTPj6pgVnZIOjeFY8tnyosm2bPvXOQapGBoZDxXdHCrI9xs8[/tex][br][/br]
    • 解   因为 [tex=22.5x2.714]49UFtdxdDKQlKWZMhTPj6oo29wvYx3v90ea06rE013DavmeRm6otKmw+kyAgbZyajeGmB2Guwgtmb8OvXIlbTKOsTPte4mTgvvI9sm4YwyKo1cAOdCaCwdhXOMZ738qM6tTetcmQG7IESSEwKgzzA203Pm+GcIMNg4oF+o28/nIJQy1DGNU2MFaoPeBWbrwPI3j9Nzwm1pTlN/XCbrz29g==[/tex]所以 [tex=11.143x2.357]49UFtdxdDKQlKWZMhTPj6lDXRl3SaN2QtSvbJCBqF/Lu6Y20ZvpXDCjgJ9jMLW8kkn3b0LvZDoPC0G8IAz2C8IifUwWSR0PupBZFDDmKyMM=[/tex]或[tex=24.5x2.786]bK3GCrgpVvkFsCZx+h7zx1PbgqxvkLNCEUVsbske6tXPKZyGlmI1NnM4XfihMFvL7y25MrRD//zHTevvUlwLMl1fbsIsHec7c/1EPnaNH52rtp/tcFWTPMsnOUkNNuMsUxri7JszJqK+Tlyghib+e2pSYTKuWA67niHbxfekduWCzgZIJsz25102wOn8yk8tOVc6NzUdWHyhPVQwjXZj8eNcbiC+WqqtCjWUayIM87w0hdEbsl7ksltgbojLvmjo[/tex][tex=23.571x3.0]35NvkV3X2zf5DVZgRc62o/ZKg2ePA90GQ/F4xNeYWr/fI0+C+hHoh32xPy80ZRARSZId2qxkh7shMffPgnSLtZh/InULoHzKADwQLnJLJjHB6fGXc1k+d0eeZBZCl7Reczb+kiePDG8p1bl71yKQslCvWiiPF6+nBhkg2sFs+xqfwpj7KzX9iEPQfljvZ/joT5Ae7GSi19tlvNjxAxjA+XVacTXfUUv0vCT2aWMT+ZI=[/tex]
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    • 0

      求下列函数在定点处的导数:[tex=9.857x1.214]fn71dZS4uPtdKS6bV00GTL0zzXWME3rb6/AslkRH9IZGN7YtAYlOG0V8pXONBIKv[/tex], 求 [tex=5.714x1.429]u6Y0kcULrWtuDORiooHVp5Wut/BHam3R79dzjENG4rKIU+cA8ZOp6soRBjh8tVvh[/tex][br][/br]

    • 1

      求函数在给定点处的导数.[tex=6.429x1.214]5kZouTy5Ss7ktAUPPy0CHw==[/tex], 求 [tex=2.786x1.5]sjfuWMMhf0DWjH0tcVJe8JFWikRUu/K0i1zaDGj4WGWkvwEAAYkbgn+AQ3/gRG+b[/tex] .

    • 2

      设[tex=0.5x1.214]gNOHIx2AGu3qP//Yn7oxrg==[/tex]为可导函数,求下列各函数的一阶导数：[br][/br](1) [tex=5.571x1.571]h7eWmw/XwEsBN2gkdn2cE9vd8Ve0MATjdsoFxMhCMLFenkwYbbLfP1dxu+eg/tIz[/tex](2)[tex=5.643x1.357]cUjh8uerl905q1pR0g7dPA==[/tex][br][/br]

    • 3

      设采样系统如题9. 8图所示，其中采样周期[tex=2.357x1.0]H8LmHwCpGqYY5kuaC76AkA==[/tex][br][/br](1)求系统开环脉冲传递函数 [tex=2.071x1.357]eyQXdotwzQBLROluYM4g2g==[/tex][br][/br](2) 求系统闭环脉冲传递函数[tex=2.0x1.357]xBuE1ZHeQa1mIyiLTpaxTg==[/tex](3) 求使系统稳定的[tex=0.857x1.0]FfIhW8W8Jb8XV2jfmtoNZA==[/tex]值。[br][/br][img=603x180]17972f8c9bdc096.png[/img]

    • 4

      求下列函数在给定点处的导数:[tex=6.0x1.357]XNNhil9pQDzUxA2OWFXcCbf44C2j9K7QC0CRluNZ9Co=[/tex]