00461nam a22001217a 4500020002100000082001900021100001400040245005100054260003800105300003200143500002100175650014300196  a8123911459 (pbk)  a621.3822bGOP   aGopal, R.  aProblems and solutions in signals and systems   aNew Delhi bCBS Publishers c2004  av, 354 p.b: ill.c; 21 cm.  aIndex Included.   aSignals and system aDigital signal processing vTime-Domain representation vFourier series vLaplace transform vControl systems vFEAS