Question

C# Help Please (Number one is below at the bottom)

1- Write a program that generates the following sequence using while loop

2, 3 , 6, 11, 18, 27, … , 102

2- A.    Repeat 1 using for loop.

B. Modify your program in A to skip 27 from that sequence.

C. Modify your program in A by using break statement to stop generating the sequence if the generated number is greater than 30.

3. Using loops, find the value of f(7) given:
f(0)=4,  
f(n) = 2f(n-1)+4, where n is Natural number

Hint:

f(1)=2f(0)+4= 2*4+4= 12

f(2)=2f(1)+4= 2*12+4=28

f(3)= 2f(2)+4= 2*28+4= 60

  
4. Using loops, find f(5) given:
f(0)=1, f(1) = 1
f(n) = 3f(n-1)f(n-2) +1, where n is Natural number

Hint:

f(2)=3f(1)f(0)+1= 3*1*1+1= 4

f(3)=3f(2)f(1)+1= 3*4*1+1= 13

f(4)=3f(3)f(2)+1= 3*13*4+1= 157

f(5)=3f(4)f(3)+1= 3*157*13+1= 6124

5. Using two nested for loops, generate the following
10 20 30 40 50 60
20 30 40 50 60
30 40 50 60
40 50 60
50 60
60

I started the first part.

using System;

public class SequenceWhile
{
    public static void Main(string[] args)
    {
        int i = 2, inc = 0;
        while (i <= 102)
        {
            Console.Write(i + ", ");
            i += 2*inc + 1;
            inc++;
        }
        Console.WriteLine();
    }
}

Can someone help me with the rest? Thank you.

Answer 1

using System; class MainClass { public static void Main (string[] args) { int i = 2, inc = 0; while (i <= 102) { if(i != 27) Console.Write(i + " "); i += 2*inc + 1; inc++; } Console.WriteLine(); } } /* OUTPUT 2 3 6 11 18 38 51 66 83 102 */ using System; class MainClass { public static void Main (string[] args) { int i = 2, inc = 0; while (i <= 102) { if(i > 30) break; if(i != 27) Console.Write(i + " "); i += 2*inc + 1; inc++; } Console.WriteLine(); } } /* OUTPUT 2 3 6 11 18 */

using System; class MainClass { public static void Main (string[] args) { int f = 4, n = 7; for(int i=1; i<=n; i++) f = 2*f + 4; Console.WriteLine("f(7) = "+ f); } } /* OUTPUT: f(7) = 1020 */

// 2 coding questions at a time please -- Policy of HomeworkLib. Answerd 2 and 3.