In Exercises 3–6, find an explicit description of Nul A by listing vectors that span the null space.
5. A =
[
1
−
2
0
4
0
0
0
1
−
9
1
0
0
0
0
1
]
Quantities that have magnitude and direction but not position. Some examples of vectors are velocity, displacement, acceleration, and force. They are sometimes called Euclidean or spatial vectors.
In Exercises 1–6, determine which sets of vectors are orthogonal.
Compute the products in Exercises 1–4 using (a) the definition, as in Example 1, and (b) the row–vector rules for computer Ax, or, the rule for computing a product Ax in which the i th entry of Ax is the sum of the products of corresponding entries from row i of A and from the vector x. If a product is undefined, explain why.
M2
Chapter 4 Solutions
Thomas' Calculus and Linear Algebra and Its Applications Package for the Georgia Institute of Technology, 1/e
Intermediate Algebra for College Students (7th Edition)
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