Determine k sabendo que |v| ^2=39 e v=(1;k;-5/2).... Pergunta de ideia deBaat

January 2020 1 129 Report

Determine k sabendo que |v| ^2=39 e v=(1;k;-5/2)

Lista de comentários

JoãoTeixeira A norma de um vetor, será a raiz quadrada da soma de suas coordenadas ao quadrado:

|v|² = ( $\sqrt{1^2 + k^2 + (\frac{-5}{2})^2 }$ )²
39 = $1 + k^2 + \frac{25}{4}$
39 = $\frac{29}{4} + k^2$
k² = $\frac{156}{4}-\frac{29}{4}$
k = $\sqrt\frac{127}{4}$

1 votes Thanks 1

More Questions From This User See All

Baat February 2021 | 0 Respostas

Responda

Baat February 2021 | 0 Respostas

Responda

Baat February 2021 | 0 Respostas

Responda

Baat January 2021 | 0 Respostas

Responda

Baat January 2020 | 0 Respostas