Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

Pages: **1**

**limpfisch****Member**- Registered: 2012-05-08
- Posts: 11

Let B= {(2 -1),(3 -1)

Let C= {(1 2),(2 3)

Find the change of basis matrix from C to B.

I've been sick the last week so haven't attended lectures and have an assignment due. The notes for this course are terrible and do not help me with this so please explain how to do this thanks.

*Last edited by limpfisch (2012-08-16 00:13:39)*

Offline

**bob bundy****Administrator**- Registered: 2010-06-20
- Posts: 8,138

hi limpfisch,

It's a looooong time since I did this so I'm having to drag this up from deep memory.

A pair of vectors form a basis (let's say for C) if you can always find scalars so that

In the new basis

So you need these to be equal.

times by the inverse of the right hand matrix

gives

So, coordinates in the old basis are turned into coordinates in the new basis by this matrix.

Hopefully that is correct ... fingers crossed ...

Bob

Children are not defined by school ...........The Fonz

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

Offline

Pages: **1**