Answered: Q1 Consider an x-by-y logical…

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

Section: Chapter Questions

Problem 1PE

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Consider an x-by-y logical containing n number of 0's and m number of 1's. Additionally, consider an x-by-y matrix (double). Which of the following outputs is true if the matrix is indexed with the logical?

Select one:

Output is a m-by-1 double

Output is a n-by-1 double

Output is an x-by-y double

Output is an m-by-n double

Output is an x-by-y logical

Consider a text file that contains 19 rows of header text followed by 23 rows of numerical data. How many times will the fgetl() function need to be called to import the 9^th row of numerical data in the text file?

Select one:

a. 23

b. 28

c. 14

d. 9

e. 1

Consider x to be an m-by-n matrix with m > n. Which of the following statements is true regarding y = ones(length(x))?

Select one:

The output of y will be an n-by-n matrix

The output of y will be an m-by-m matrix

The output of y will be an n-by-m matrix

The output of y will be a 1-by-n vector

The output of y will be a 1-by-m vector

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