(a) Suppose that a 120-vector a represents the age distribution of the customs in a bank, where a, is the number of customs with i year olds, for i = 1, ..,120. Consider that 1 is one vector, whose elements are equal to 1, and that b is a 120-vector with bị = t. Use words (NOT equations) to explain the meaning of 1'a bTa 1Ta (1) (b) Consider that x, y and z are m-vectors, and that ß is a scalar. Discuss the efficient procedure to compute B(x)"y+B(x)*z. Show the number of additions and the number of multiplications of your suggested procedure.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter3: Functions And Graphs
Section3.3: Lines
Problem 76E
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(a) Suppose that a 120-vector a represents the age distribution of the customs in a bank, where a,
is the mumber of customs with i year olds, for i = 1, .,120. Consider that 1 is one vector,
whose elements are equal to 1, and that b is a 120-vector with b, = i.
Use words (NOT equations) to explain the meaning of
(i)
1"a
bTa
1Ta
(b) Consider that x, y and z are m-vectors, and that ß is a scalar. Discuss the efficient proceđure
to compute B(x)"y+ß(x)"z. Show the mumber of additions and the number of multiplications of
your suggested procedure.
Transcribed Image Text:(a) Suppose that a 120-vector a represents the age distribution of the customs in a bank, where a, is the mumber of customs with i year olds, for i = 1, .,120. Consider that 1 is one vector, whose elements are equal to 1, and that b is a 120-vector with b, = i. Use words (NOT equations) to explain the meaning of (i) 1"a bTa 1Ta (b) Consider that x, y and z are m-vectors, and that ß is a scalar. Discuss the efficient proceđure to compute B(x)"y+ß(x)"z. Show the mumber of additions and the number of multiplications of your suggested procedure.
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