K tomu, abyste zvládli násobení matic, je nezbytně nutné zvládnout skalární součin vektorů. [br]Pro dva vektory z R[sup]3[/sup] [math]u=\left(u_1,u_2,u_3\right)[/math] a [math]v=\left(v_1,v_2,v_3\right)[/math] je výsledkem skalárního součinu číslo[br][math]u.v=u=u_1v_1+u_2v_2+u_3v_3[/math][br][br]Prvky součinu matic tvoří skalární součin příslušného řádku a sloupce. Chceme-li např. vypočítat prvek v prvním řádku a druhém sloupci matice [i]A.B[/i], vynásobíme skalárně první řádek [i]A[/i] se druhým sloupcem matice [i]B[/i].
Skalárně vynásobíme příslušný řádek a sloupec.
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whn31g5ZasohauHGkc+9MArQXv1Mq2rTcd7/qm4xBhokqUQ2hvY9f5UrChu7uVJGRPKcVoU46VwVZc2IijoC1RZ12p64kXBm32Wks7WUgr3Kbr7KDu4Ae97OUI2fDpSMktQpwOguoSNQUH4woRAkyyNwDWfwRpFMD4vb+n9WWyWcpwWRbgUrurKbkQp4lFAw2+7onfZt7JSuHyormB3lALxBWzD72eQLFlov4qDiUuQ8s1V/isAbJZO1OVvxMfxu3CxmURpl9hY9jvr8rHx43jsumj6aJFkaQLtDQ02ERh2OtHU0EpnvgmbyX5nUwNaexlokiVBEAQDJEuCIAgGSJYEQRAMkCwJgiAYIFkSBEEwQLIkCIJggGRJEATBAMmSIAiCAZIlQRAEAyRLgiAIBkiWBEEQDPw/GrvHhUhDxy8AAAAASUVORK5CYII=[/img]
Kapitola [url=https://www.matweb.cz/matice/]Matice[/url] na serveru Matematika.cz.