vectors

so i guess this week i am going to do my blog on vectors, since its really easy. All you need to know is a few easy formulas and notes. Once you get know that you should be readyy to roll. woohooo. so now im going to give you what you need to know.

•  To add vectors: v + u = (a, b) + (c, d) = (a + c, b + d)
• To subtract vectors: v - u = (a, b) – (c, d) = (a - c, b – d)
• Scalar multiplication: kv = k * (a, b) = (ka, kb)
• To find a vector equation from two points, you do P2 - P1
• Vector equation: (x, y) = (x0, y0) + t (a, b)
• Parametric equations: x = x0 + at and y = y0 + bt
• To find the magnitude of a vector, you do |v| = sq. root of (x^2 + y^2)
• Component form is (r cos theta, r sin theta)

Now that you know all that you should be ready to do a few or maybe one example. yayy. Just remember to remember those formulas. It's very important!!!

Example: <2,3>-<5,1>

• 2-5=-3
• 3-1=2
• Your answer is going to be <-3,2>

so thats it. thanks for readingg. byeee peopleeee.

BRAD