Solve the system using a graphing calculator. If there are infinitely many solutions or no solution, so indicate.
What will be an ideal response?
You might also like to view...
Discuss the advantages and disadvantages of treating clustering as an opti- mization problem. Among other factors, consider efficiency, non-determinism, and whether an optimization-based approach captures all types of clusterings that are of interest.
What will be an ideal response?
How many times will the following loop print hello?
i = 1; while ( i <= 10 ) cout << "hello"; a. 0. b. 9. c. 10. d. An infinite number of times.
An encryption scheme is __________ secure if the ciphertext generated by the scheme does not contain enough information to determine uniquely the corresponding plaintext, no matter how much ciphertext is available.
Fill in the blank(s) with the appropriate word(s).
Define two derived classes of the abstract class ShapeBase in Listing 8.19. Your two classes will be called RightArrow and LeftArrow. These classes will be like the classes Rectangle and Triangle, but they will draw arrows that point right and left, respectively. For example, the following arrow points to the right:
The size of the arrow is determined by two numbers, one for the length of the “tail” and one for the width of the arrowhead. (The width is the length of the vertical base.) The arrow shown here has a length of 12 and a width of 7. The width of the arrowhead cannot be an even number, so your constructors and mutator methods should check to make sure that it is always odd. Write a test program for each class that tests all the methods in the class. You can assume that the width of the base of the arrowhead is at least 3. The problem description requires that the base width be an odd number so the triangle is symmetrical, but it does not say exactly how to ensure this. One option is to test the user’s input and display an error message if it is even, then prompt for re-entry of an odd number. Another approach is to adjust the width by adding or subtracting one if it is even, making sure it does not go below 3 if subtraction is used. The approach taken in the solution shown here is to add 1 if the user inputs an even number and, since it is always a good idea to keep the user informed, a message tells the user that the width was adjusted. Getting the display right on this one is tricky! It may take some trial and error to get it worked out, so it is especially helpful to implement it one step at at time, being patient and using System.out.println and System.out.print to obtain the right output. Consider doing the implementation in the following steps: • tail of right arrow • lines before the tail for a base width of at least 5 • lines after the tail for the same base width • first line of left arrow for a base width of at least 5 • top lines of left arrow for the same base width • line including the tail for the same base number • bottom lines for the same base number