프롬프트> octave -qi octave:1> # Let's find roots of the equation x^2 - 5 = 0. octave:1> c = [1, 0, -5]; # 다항식의 계수들 octave:2> roots(c) ans = -2.2361 2.2361 octave:3> x = roots(c); octave:4> x(1) ans = -2.2361 octave:5> x(2) ans = 2.2361 octave:6> sqrt(5) ans = 2.2361 octave:7> format long octave:8> x x = -2.23606797749979 2.23606797749979 octave:9> x(1), x(2) ans = -2.23606797749979 ans = 2.23606797..