Recent content by magneeto

",","()","a" are all terminals and "|" is not the logical or . it is the or for regular expressions(either expr1 or expr2)

what langugage?? grammar #1: S->(L)|a L->L,S|S what language does this grammar generate? some strings generated by this grammar r (a,a), (a,(a,a))... grammmar #2: bexpr->bexpr or bterm| bterm bterm-> bterm and bfactor| bfactor bfactor-> not bfactor| (bexpr) | true | false is...

can we assign the same ip address to two different PC's ? if so then how does it work when sending or receiving packets?

OK :) now it's clear . thank's a lot

thanks mike. It's easy when u think about the shifting of sine fuctions. But for a discrete time signal x(n+k) means taking future values of x(n) (n is the sampling variable) whereas x(n-k) means taking past values. and when we plot such signals shouldn't it be that for x(n+k) we take the signal...

signals...help needed hi, can anyone tell me why a discrete time signal x(n-k) where k>0 is shifted right along the X-axis(the time domain) and x(n+k) is shifted left. should'nt it be the reverse? this is for the graphical notation. but for the notation...