Question

Please solve this question step by step

Answer 1

Answer:

-5i -20j -5k

Step-by-step explanation:

We can solve this using determinants.

The first row of the determinant will be the direction vectors, i.e i,j and k

The second row of the determinant will be the coefficients in the first vector, and the third row will be the coefficients of the second vector

We will have something like

| i         j             k |

|2        1            -6 |

|3         -1            1 |

= i[1*1 - (-1*-6)] -j[ 2*1 - (-6*3)] + k [2*-1 -(1*3)]

= -5i -20j + -5k