- #1

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*, then w = 1/4 u + 3/4 v is also a solution of Ax = b.*

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- Thread starter Amy-Lee
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- #2

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Just plug it in and use the fact that matrix multiplication is linear.

- #3

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Plug what? where?

Ax=b, then b=uv ? and uv=w? uv = 1/4u + 3/4v?

Ax=b, then b=uv ? and uv=w? uv = 1/4u + 3/4v?

- #4

HallsofIvy

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So "plug" w in for x: Aw= what? Use the fact that w= (1/4)u+ (3/4)v and that A is a

- #5

tiny-tim

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, then w = 1/4 u + 3/4 v is also a solution of Ax = b.= b

Plug what? where?

Ax=b, then b=uv ? and uv=w? uv = 1/4u + 3/4v?

Amy-Lee,

you know that Au = b and Av = b,

so just carry on from there.

- #6

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Amy-Lee,forgetx …

you know that Au = b and Av = b,

so just carry on from there.

thanks TT, I will try that

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