Concept explainers
In Exercises 23 and 24, mark each statement True or False. Justify each answer.
23. a. If f is a function in the
b. A vector is an arrow in three-dimensional space.
c. A subset H of a vector space V is a subspace of V if the zero vector is in H.
d. A subspace is also a vector space.
e. Analog signals are used in the major control systems for the space shuttle, mentioned in the introduction to the chapter.
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