Answer:
Touch typing is a useful skill. It allows you to increase your typing speed and at the same time and reduces the number of errors you make. Touch typing makes you type faster and more efficient. You can be productive and complete your school assignments much quicker. Touch typing also allows you to type communication documents, like e-mails, in a fast and efficient manner. Most importantly, if you type properly then it will reduce repetitive injuries like carpal tunnel syndrome. There are many benefits of learning how to type correctly.
Explanation:
Answer:
Explanation:
try
clc
clear
close all
x=linspace(0,2*pi,7);
z=cos(pi.*x./3)
% the output on mine is to 4 decimals so it looks a bit different than what the output on your example is , but, I think if you change the format to decimal 2 it will look the same :)
For the view of Exercise 4.18, explain why the database system would not allow a tuple to be inserted into the database through this view.
For reference
For the database of Figure 4.12, write a query to find the ID of each employee with no manager. Note that an employee may simply have no manager listed or may have a null manager. Write your query using an outer join and then write it again using no outer join at all.
OUTER JOIN
select e.ID from employee e left outer join manages m on e.ID = m.ID
where m.manager_id is null;
NO OUTER
select e.ID from employee e where e.ID not in (select m.ID from manages m) or e.ID in (select m.ID from manages m where m.manager_id is null);
The first phone was made in 1854 by <span>Antonio Meucci.
Other inventors like </span>Johann Philipp Reis, <span>Alexander Graham Bell, Elisha Gray, and Thomas Edison reinvented the telephone or enhanced it.</span>
