Riešenie

(a) Lineárne

y(t) = k.x(t)

(b) Princíp superpozície

x(t) -> y(t)

x(t) = x1(t) + x2(t)

x1(t) -> y1(t)

x2(t) -> y2(t)

x(t) -> x1(t) + x2(t) => y(t) = y1(t) + y2(t)

x(t) = a.x1(t)

y(t) = a.y1(t)

(c) Časovo invariantné

x(t) -> y(t) x(t-t0) -> y(t-t0)