... ()()() 121 21022ambmcm;;,;;,;;==+ =- rrr b) 2 1121 122 212 ammbmmcmm(;;);(;;),(;;)= +-= ++=+rrr c) ()()() 121 2122 ammmbmmmc;;,;;,;;= +-= -+ =rrr d) ()()()13 2121 022abmmmcm;;,;;,;; =-= + ... ()()()102230034 162 2abcu;;,;;,;;(;;)ì= =-= - í= îrrrr e) ()()()23 1125 2 26 312 abcu;;,;;,;;(;;)ì =-= - =- í=îrrrr f) ()()()211132322435abcu;;,;;,;;(;;)ì =-= -= í =- îrrrr ... 32233231ab(;;),(;;)= =- rr e) 42422220ab(;;),(;;) =-= - rr f) 3 2121 1ab(;;),(;;) =-= - rr Baứi 8. Tỡm vect ur, bit rng: a) 2131323245 1120 abcauubuc(;;),(;;),(;;).,.,.ỡ =-= - =- ớ =-= -= ợrrrrrrrrr...