Logické operace

a = 1:9, b = 9-a
tf = a>4
tf = a==b
tf = b - (a>2)
x = (-3:3)/3
sin(x)./x
x = x + (x==0)*eps
sin(x)./x

tf = a>4
tf = -(a>4)
tf = (a>2) & (a<6)

discont

xor(x,y), any(x), all(x), isnan(x), isinf(x), finite(x)