QBUS1040 Lecture 1: Lecture 1 - Vectors
8 Oct 2018
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3:07 pm ai=vector i from a collection (ai)j = jth element of a. A vector of size n is called an n-vector: A 1-vector is considered to be the same as a number, i. e. , we do not distinguish between the 1-vector. Entry = 1 (all others elements are 0)/ unit vector. Number or values of an element in a vector. Set of all real n vectors a is an n vector with real entries / is an element of the set rn. Vector with all elements equal to 0, except on element which is equal to 1. Ones vector/1n n vector with all its elements equal to 1. Inner product --> result is always a scalar. Vectors can only be added or subtraction is they are the same size. Real numbers are stored in computers using oati(cid:374)g poi(cid:374)t fo(cid:396)(cid:373)at, (cid:449)hi(cid:272)h (cid:396)ep(cid:396)ese(cid:374)ts a (cid:396)eal (cid:374)u(cid:373)(cid:271)e(cid:396) using a block of 64 bits (0s and 1s), or 8 bytes (groups of 8 bits).
