Column Space of Matrix Calculator
The calculator will find the column space of the matrix, with steps shown.
Related calculator: Row Space of Matrix Calculator
Your Input
Find the column space of $$$\left[\begin{array}{ccc}1 & 2 & 3\\2 & 5 & 4\\1 & 1 & 5\end{array}\right]$$$.
Solution
The row echelon form of the matrix is $$$\left[\begin{array}{ccc}1 & 2 & 3\\0 & 1 & -2\\0 & 0 & 0\end{array}\right]$$$ (for steps, see rref calculator).
The column space is a space spanned by the columns of the initial matrix that correspond to the pivot columns of the reduced matrix.
Thus, the column space is $$$\left\{\left[\begin{array}{c}1\\2\\1\end{array}\right], \left[\begin{array}{c}2\\5\\1\end{array}\right]\right\}$$$.
Answer
The column space of the matrix is $$$\left\{\left[\begin{array}{c}1\\2\\1\end{array}\right], \left[\begin{array}{c}2\\5\\1\end{array}\right]\right\}$$$A.