Answer:
a)
inv([1 1; 100 100])
warning: matrix singular to machine precision
warning: called from ATest at line 1 column1
ans =
Inf Intf
Inf Inf
b)
A = [4, 9; 5, 11]
B = inv(A)
A*B
B*A
4. 9
5 11
-11.0000 9.0000
5.0000 4.0000
ans . 00000 -0.00000
0 . 00000 1.00000
ans 1.00000 0.00000
0.00000 1.00000
c)
x = [5; 10]
y = A*x
x = [5; 10]
y=
110 135"
d)
B * y is
5.0000
10.0000
e)
B * y
ans 5.0000
10.0000
Answer:
Explanation:
Keep in mind a lossy algorithm will lose information while a lossless algorithm maintains all your original information.
Therefore:
A. False, a lossy algorithm will not allow perfect reconstruction.
B. True, if you don't care about keeping all your information it's easier to compress.
C. False, you can use a lossless algorithm for anything.
D. False, the point of lossless is that you keep all information.
Answer:
- import java.util.Scanner;
- public class Main {
-
- public static void main(String[] args) {
-
- Scanner input = new Scanner(System.in);
- System.out.print("Please enter two characters: ");
- String inputStr = input.nextLine();
-
- if(inputStr.charAt(0) == 'B' || inputStr.charAt(0) == 'b'){
- System.out.println("Biology");
- }
- else if(inputStr.charAt(0) == 'C' || inputStr.charAt(0)== 'c'){
- System.out.println("Computer Science");
- }
- else if(inputStr.charAt(0) == 'I' || inputStr.charAt(0) == 'i')
- {
- System.out.println("Information Technology and Systems");
- }
- else{
- System.out.println("Invalid major");
- }
-
- int num = Character.getNumericValue(inputStr.charAt(1));
-
- if(num >= 1 && num <= 4){
- switch (num){
- case 1:
- System.out.println("freshman");
- break;
- case 2:
- System.out.println("sophomore");
- break;
- case 3:
- System.out.println("junior");
- break;
- case 4:
- System.out.println("senior");
- break;
- }
-
- }
- else{
- System.out.println("Invalid year status");
- }
-
- }
-
- }
Explanation:
The code consists of two main parts. The part 1 is to validate the input major and print out the major according to the input character (Line 10 -22). If the input character is not matched with the target letters, a message invalid major will be displayed.
The part 2 is to validate the year status to make sure it only fall within the range of 1-4 (Line 26 -45). If within the range, the program will display the year major accordingly. If not a message invalid year status will be displayed.
