信号与线性系统

所需积分/C币:10 2018-02-11 22:34:59 2.36MB PDF

信号与线性系统· 吴大正 课后习题 全解 PDF文件
200612 1) (43) 13) ·春 (43) (94) …………(94) ……………………………………(94) (96) (143) (143) (150) (229) (229) ……………………………………(229) (233) (299) (299) …(299) (303) (371) ·。鲁 ………(371) ……………(371) (374) (432) ………………(432) (432) (435) (1) (2) f1(·)f2(·)() () f(-t) f(一k) (3) (k一k0),to,k to>0k。>0,f(t-to)f(k一k) f(·) k。,f(t+t0)f(k+k) f(·) to ko (4) fCat) 0<a<1,f(at) f(t) def (t)=limy, (t) 1,t>0 0 <t<(n=2,3,…) 22 (2) def pn(t 0 0,t de(t) dt (3) 6'(t) dδ(t) O'(t)o(t)da (0) (4) f(t)δ(t)=f(0)δ(t) f(t)δ(t)dt=f(0) f(t)δ(t)d f(t)δ(t-t1)=f(t1)δ(t-t1) f(t)δ(t-t1)dt=f(t1) f(t)o(t-t1)=f(t1)(t-t1)-f(t1)0(t-t1) f(t)8(t-tidt=-f'(t) (-t)=-m)(t),(m)(t) f"(t1) δ(t-t;) (i=1,2 5 (·)=yn(·)+y2(·)=T[{x(0)},{0]+T[{0},{f(·)} ya(·)=T[a1x1(0)+a2x2(0)]=a1T[x1(0)]+a2rLx2(0)] y2(·)=TLB1f1(·)+B2f2(·)=B1TLf1(·)]+P2Lf2(·)] (2) T[{0},f(·)]=y2(·) T[{0},f(t-t)]=y2(t-t) T[{0},f(k一k)] k一kd) (3) to k f(·)=0,t<to(k<k) yn(·)=T[10},f(·)]=0,t<to(k<k。) (4) f(·), f(·)<∞, 1-1】 (1)f(t)=(2-3e-)E(t)(2)f(t)=e-,-∞<t<∞ (3)f(t)=sin(πt)E(t) (4)f(t)=ε(sint) k<0 (5)f(t)=r(sint (6)f(k)= k≥0 (7)f(k)=2(k) (8)f(k)=(k+1)E(k) k丌 (9)f(k)=sin e(k)(10)f(k)=[1+(-1)e(k) (1) f(t)=(2-3e)E(t) 1-1(a) (2) f(t)=e-4,-∞<t<∞ 1-1(b) (3) f(t)=sin(πt)E(t) 1-1(c) (4) f(t)=E(sint) 1-1(d) (5) f(t)=r(sint) 1-1(e) k<0 (6) f(k)= k≥0 (7) f(k)=2(k 1-1(g) (8) f(k)=(k+1)(k) 1-1(h) kπ (9) f(k)=sin (k) -1(i) (10)f(k)=[1+(-1)]e(k) 1-1(j)

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