■2 = (1,0). {a.b) = {a,b).

.b) + (-a,-h) = (0fl).

(^a< *) ⁼ (^a> 0) + (0, b) = (a, 0) + (6, 0) - (0,1),

Mamy i² = (0,1) • (0,1) = —a także

fi_=l2._i=__l>i4 _{= i}2_l2_sil /5 = i4. _{< = Ji}

i_l+z₂ = (_O + i/) + (c + </0 = (_O + _C) + (» + d)/ --, - z₂ = (o + bl) - (c + rffl = (a - c) + {b - d, i Z2 = (a + bf) (c + di) = (ac - bdj + (bc + ad)<

ł-dir

(2.2)