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Solve equation Ax = y, where A and y are known

  • Thread starter xWaffle
  • Start date
  • #1
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0

Homework Statement


Solve for x: Ax = y.

A = {{2 0 1},
{1 1 4},
{2 2 1}}

y = {{1},
{1},
{1}}


Homework Equations


Basic Matrix operations
_________________________

I have a vague idea how I'm supposed to do this, but I have no attempt yet.. eigenvalues and eigenvectors come to mind..in some way :frown:
 

Answers and Replies

  • #2
LCKurtz
Science Advisor
Homework Helper
Insights Author
Gold Member
9,535
751
Three possibilities come to mind:
Row reduction
Multiply by A inverse
Cramer's rule (determinants)

Try what you know.
 

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