Question

Seja o vetor u = (x,-3,-5), o módulo do vetor IuI igual a 7,07, calcule o valor da coordenada x.

Answer 1

Resposta:

|u| =√(x²+(-3)²+(-5)²)=7,07

x²+9+25=7,07²

x²=√(7,07²-25-9)

x=±√15,9849