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| − | 3.1.23 T is invertible. From summary 3.1.8''' | + | 3.1.23 '''T is invertible. From summary 3.1.8'''''' |
| − | 3.1.34 | + | 3.1.34 To describe a subset of R3 as a kernel means to describe it as an intersection of planes. |
| − | + | By inspection, the given line is the intersection of the planes | |
| − | + | x+y = 0 and | |
| − | + | 2x+z = 0. | |
| − | + | Then this means the kernel of the linear transformation T. | |
| − | + | ||
''' | ''' | ||
Latest revision as of 12:13, 8 December 2010
hw hints from wang499
3.1.10 just solving the system of Ax=0. then can get the kernel of A.
3.1.23 T is invertible. From summary 3.1.8'
3.1.34 To describe a subset of R3 as a kernel means to describe it as an intersection of planes.
By inspection, the given line is the intersection of the planes
x+y = 0 and
2x+z = 0.
Then this means the kernel of the linear transformation T.
