... 3 2121 1ab(;;),(;;) =-= - rr Baứi 8. Tỡm vect ur, bit rng: a) 2131323245 1120 abcauubuc(;;),(;;),(;;).,.,.ỡ =-= - =- ớ =-= -= ợrrrrrrrrr b) 23 1123 2116abcuaubuc(;;),(;;),(;;),,.ỡ =-= - =- ớ^^ =- ợrrrrrrrrr ... ()()() 121 21022ambmcm;;,;;,;;==+ =- rrr b) 2 1121 122 212 ammbmmcmm(;;);(;;),(;;)= +-= ++=+rrr c) ()()() 121 2122 ammmbmmmc;;,;;,;;= +-= -+ =rrr d) ()()()13 2121 022abmmmcm;;,;;,;; =-= + ... 222642860xyzxyz+ +-+ = e) 222 124 6240xyzxyz+ +-+ -+ = f) 222 6121 2720xyzxyz++ ++= g) 22284240xyzxyz+ +-+ +-= h) 222340xyzxy+ +-+ = i) 222333631520xyzxyz++ +-+ -= k) 222622100xyzxyz+ +-+ -+ =...