asked 205k views
1 vote
Let B be the basis of P2 consisting of the three Laguerre polynomials ​1, 1-t​, and ​2 - 4t + t^2, and let p(t) = 16 - 25t + 6t^2. Find the coordinate vector of p relative to B.

[p]B = ?

asked
User Miraage
by
8.2k points

1 Answer

3 votes

Polynomial coordinates

Answer:

\[p\]B = [16, -25, 6]

Explanation:

Okay, let's go through this step-by-step:

The three basis vectors for the basis B are:

b1 = 1

b2 = 1 - t

b3 = 2 - 4t + t^2

To find the coordinate vector of p(t) = 16 - 25t + 6t^2 relative to this basis B, we need to solve the equation:

p(t) = c1b1 + c2b2 + c3b3

Plugging in the expressions:

16 - 25t + 6t^2 = c1(1) + c2(1 - t) + c3(2 - 4t + t^2)

Equating coefficients gives:

c1 = 16

c2 = -25

c3 = 6

Therefore, the coordinate vector of p(t) relative to the basis B is:

\[p\]B = [16, -25, 6]

answered
User Timror
by
8.8k points
Welcome to Qamnty — a place to ask, share, and grow together. Join our community and get real answers from real people.