L\u1eddi gi\u1ea3i<\/strong><\/p>\n\n\n\nV\u1ecb tr\u00ed c\u1ee7a qu\u00e2n xe: h\u00e0ng 3, c\u1ed9t c<\/p>\n\n\n\n
V\u1ecb tr\u00ed c\u1ee7a qu\u00e2n m\u00e3: h\u00e0ng 5, c\u1ed9t f<\/p>\n\n\n\n
Tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi To\u00e1n 10 H\u00ecnh h\u1ecdc B\u00e0i 4 trang 22<\/strong>: H\u00e3y ph\u00e2n t\u00edch c\u00e1c vect\u01a1 a\u2192<\/em>, b\u2192<\/em> theo hai vect\u01a1 i\u2192<\/em> v\u00e0 j\u2192<\/em> trong h\u00ecnh (h.1.23)<\/ins><\/p>\n\n\n\n