各序列的图形如题图所示,求下列卷积和。[img=850x300]17afd2671aba00e.png[/img][tex=4.786x1.357]Vdeo3nC3yeOqO5e3sWmbAPAlgKbBDDp9q2mWpqSeNRw=[/tex]
举一反三
- 各序列的图形如图所示,求下列卷积和。[tex=4.786x1.357]Vdeo3nC3yeOqO5e3sWmbAPAlgKbBDDp9q2mWpqSeNRw=[/tex][img=540x308]17aec794598dff8.png[/img]
- 各序列图形如题图所示,试求:若[tex=7.357x1.357]I7a0PHsrNEvRGWFJd/K9lPWtVdrR2SbmNNydccffnCI=[/tex], 则[tex=4.786x1.357]LVLPMShTdN08+77sRin3mA==[/tex]和[tex=1.786x1.357]iXt6DDo9spV6GqObEkiNeg==[/tex]各是多少?
- 求微分方程 [img=635x61]17da6537085dd29.png[/img] 的特解; ( ) A: (3*sin(5*x))/exp(2*x) B: exp(2*x) C: (3*sin(5*x)) D: (3*cos(5*x))/exp(2*x)
- 求不定积分[img=121x54]17da653839aa6ae.png[/img]; ( ) A: log(x^2 + 3*x + 25/4)/4 + (5*atan(x/2 + 3/4))/4 B: log(x^2 + 3*x + 25/4)/4 C: (5*atan(x/2 + 3/4))/4 D: log(x^2 + 3*x + 25/4)/4 - (5*atan(x/2 + 3/4))/4
- 求微分方程[img=634x60]17da653955cf9e7.png[/img]的特解。 ( ) A: sin(2*x)/3 - cos(x) - cos(x)/3 B: sin(2*x)/3 - cos(x) - sin(x)/3 C: cos(2*x)/3 - cos(x) - sin(x)/3 D: sin(2*x)/3 - sin(x) - sin(x)/3