- #1

- 5

- 0

X' * X =

(50, 300)

(300, 1000)

Then find Y if

Y * X =

(300, 2000)

Problem is that when I try to solve for X (or X') first, I get three equations with four unknowns (a11, a12, a21, a22). Any help?

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- Thread starter pinto89a
- Start date

- #1

- 5

- 0

X' * X =

(50, 300)

(300, 1000)

Then find Y if

Y * X =

(300, 2000)

Problem is that when I try to solve for X (or X') first, I get three equations with four unknowns (a11, a12, a21, a22). Any help?

- #2

- 537

- 1

- #3

- 5

- 0

I get

a11 ^2 + a21 ^2 = 50

a11 * a12 + a21 * a22 = 300

a12 ^2 + a22 ^2 = 1000

but I can't get the fourth equation?

- #4

- 185

- 3

The matrix X must be 2 columns, but how many rows? Is X a simple 2x2 matrix?

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