Problem 1 Define the matrix A = [1:4 5:8 ones(Int64,4)1. Predict the result of performing the following operations in Julia (before checking your answers by running them). Note that the lines are meant to be run one-by-one in the same workspace, so when you eg. change an array this will affect the subsequent statements. a x = A[3,:) b. B = A[2:2,1:3] C. A[1,1] = 9 + A[2,31 d. A[1:3,2:31 = [0 e; e e; e 01 e. A[1:2,2:3] = [1 3; 1 31 f. y = A[1:4, 3) 9. A = [A 12 1 7; 7 4 5; ones(Int54,2,3)11 hC = A[[1,31,2] iD = A[[1,2,4],[1,3,4]1

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Problem 1
Define the matrix A = [1:4 5:8 ones (Int64,4)1.
Predict the result of performing the following operations in Julia (before checking your
answers by running them). Note that the lines are meant to be run one-by-one in the
same workspace, so when you e.g. change an array this will affect the subsequent
statements.
a. x = A[3,:]
b. B = A[2:2,1:31
c. A[1,1] = 9 + A[2,31
d. A[1:3,2:3] = [o 0; 0 0; 0 01
e. A[1:2,2:3] = [1 3; 1 31
f. y = A[1:4, 3]
g. A = [A [2 1 7; 7 4 5; ones(Int64,2,3)11
h. C = Al[1,31,21
i. D = A[[1,2,4],[1,3,4]1
Transcribed Image Text:Problem 1 Define the matrix A = [1:4 5:8 ones (Int64,4)1. Predict the result of performing the following operations in Julia (before checking your answers by running them). Note that the lines are meant to be run one-by-one in the same workspace, so when you e.g. change an array this will affect the subsequent statements. a. x = A[3,:] b. B = A[2:2,1:31 c. A[1,1] = 9 + A[2,31 d. A[1:3,2:3] = [o 0; 0 0; 0 01 e. A[1:2,2:3] = [1 3; 1 31 f. y = A[1:4, 3] g. A = [A [2 1 7; 7 4 5; ones(Int64,2,3)11 h. C = Al[1,31,21 i. D = A[[1,2,4],[1,3,4]1
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