Question

Soal matriks dan vector

Answer 1

Jawab:

Matriks

Vektor

Penjelasan dengan langkah-langkah:

Matriks

a + b = 1

a  - b = 3

jumlahkan

2a = 4

a = 2

...

u v = -1(2)  - 2(1) + 1(1) = - 3

|u| = √(1+4+1) = √6

|v| = √(4 +1 +1) = √6

cos α  = [ u. v ] / | u||v|

cosα  = -3/6 = -1/2 =  cos 120

α = 120