1,979 Answered Questions for the topic linear algebra

Linear Algebra

01/19/13

Determine whether w is in the range of the linear operator T
T:R3 - R3: T (x,y,z) = (2x-y, x+z, y-z); w= (3,3,0) Here is my solution: T (3,3,0) = (2x3-3, 3+0, 3-0) T (3,3,0) = (3, 3, 3)  What I am doing wrong? And how to explain if it is in the range or... more
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Linear Algebra

01/11/13

Why must the determinant of a matrix with integer entries be an integer?
My answer would be because it involves only addition, subtractions and multiplications, no divisions. But I am not 100%sure. 
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Linear Algebra

01/02/13

what is a straight edge
a sraight line is a line that has a one end point and a arrow that keeps going the other direction
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Linear Algebra

12/28/12

Linear Algebra
. Indicate whether the statement is true or false. Justify your answer.(a) If Ax=b has infinitely many solutions, then so does Ax=0 (b) If Ax=b is inconsistent, then Ax=0 has only the trivial... more
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