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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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Projekcija vektora na vektorNeka su dani vektori ~a =h !iOA6= ~0 i ~ b =h ! OBi.Neka je tocka B 0 ortogonalna projekcija tocke B napravac odre ¯den tockama 0 i A. Tada vektorh ! i~ b~a = OB0= ! b cos ' ~a o = ! b cos ' ~aj~ajnazivamo vektorska projekcija vektora ~ b na vektor ~a.Skalar ~a ~b = ! b cos 'nazivamo skalarna projekcija vektora ~ b na vektor ~a.Vrijedi:~ b~a = ~a~b ~a o =! a ! bj ! a j ~a o = !a ! b ! aj ! a j 2 :

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