Behaviour being used: Adaptive mode
Minimum fraction: 0
Question summary: Considerando-se os vetores [a with rightwards harpoon with barb upwards on top equals](7, 9, 9) e [b with rightwards harpoon with barb upwards on top equals](5, 3, 3), calcule o vetor que é dado por [c with rightwards harpoon with barb upwards on top equals a with rightwards harpoon with barb upwards on top plus k times b with rightwards harpoon with barb upwards on top], de forma que o módulo de [c with rightwards harpoon with barb upwards on top] seja o menor possível. [Error converting from MathML to accessible text.] é uma constante.: (-1068/43; -1068/43; -1068/43); Nenhuma das respostas esta correta; (-144/43; 120/43; 120/43); (-2; -6; -6); (-408/43; -672/43; -672/43)
Right answer summary: (-144/43; 120/43; 120/43)
Question state: todo