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MATEMATIKA 1 Senka Banic PREDAVANJA (grupa G1): utorak i ...

MATEMATIKA 1 Senka Banic PREDAVANJA (grupa G1): utorak i ...

MATEMATIKA 1 Senka Banic PREDAVANJA (grupa G1): utorak i ...

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Sada je !a ! b~c = ! a ! bj~cjcos = P pg (h) = VUocimo: !a ! b ~c = 0 () ~a = ~0 ili ~ b = ~0 ili ~c = ~0 ili~a, ~ b i ~c su komplanarni ( = 2 ); !a ! b ~c 0 ) 2 0; 2;U koordinatnom sustavu0;~i;~j; ~ kza vektore! a = ax ~i+a y~j+a z~ k;! b = bx ~i+b y~j+b z~ k i! c = cx ~i+c y~j+c z~ kvrijedi:h~a; ~ ib;~c== !a !~i ~j ~ k b ~c =a x a y a z c x~i + c y~j + c z~ k = b x b y b zh(a y b z a z b y )~i (a x b z a z b x )~j+ (a x b y a y b x ) ~ ik c x~i + c y~j + c z~ k

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