UNI LINEAR ALGEBRA

Question 1

Orthogonal projection

Answer 1

{u.v /((v))^2 } v

Question 2

Find the angle (cos)

Answer 2

u.v/((u))((v))

Question 3

Area of the Parallelogram

Answer 3

((u))((v))sin0 = ((u x v))

Question 4

For a triangle with A, B, C

Answer 4

1/2 ((AB x AC))

Question 5

Parametric equation

Answer 5

> {v0 + td: t E IR}

Question 6

How do you know if an angle is orthogonal

Answer 6

when u . v = 0