Can someone please tell me why my Ti can't solve this matrix?

[flyingpig]

Homework Statement

Let's say I have more entries than vectors and I put them in a matrix. Now for some reason when I put rref(A) or ref(A), it gives me an error. WHYY?

 

[eumyang]

Can you give us an example? And what error does it output, exactly?

This is probably obvious, but according to the TI-84 Guidebook, when using ref( or rref(, "the number of columns must be greater than or equal to the number of rows."

 

[Mark44]

Homework Statement

Let's say I have more entries than vectors and I put them in a matrix. Now for some reason when I put rref(A) or ref(A), it gives me an error. WHYY?

What do you mean by "more entries than vectors"?

 

[flyingpig]

Let's say I have

\begin{bmatrix}<br /> 3 &amp;1 \\ <br /> 5&amp;7 \\ <br /> 1 &amp;3 <br /> \end{bmatrix}

My Ti- gives me an error

 

[flyingpig]

Anyone...?

 

[Mark44]

You didn't say what kind of TI calculator you have. According to eumyang, the TI 84 manual says that matrices must have more columns than rows. Have you looked at the user manual for your calculator?