Hey Guys, I was solving some practice questions on linear algebra and I came accross this one. I've solved many of its kind, but this one has a variation i'm not so sure about.. Here's the question: Let A = | 0 3 -6 3 | | 0 -3 6 -3 | Find a basis of nullspace (A). (a set of basic solutions for the homogeneous system) (That's a matrix, sorry about not using latex, I'm kinda new here) Now, I know how to do a normal question, by doing elementary row operations and then factoring the parameters.. But what do I do when the first column is all zeroes?? do I make the first basic solution a column of 4 zeroes? or what? Your help would be greatly appreciated, thx..