MTH643 Practice Questions Solved Set 2 by Mahar Afaq Safdar Muhammadi

Output:

Lecture # 10

Question: Write a for loop to add first 20 numbers which are divisible by 5.

Solution:

%Write a for loop to add first 20 numbers which are divisible by 5. v=1:100; sum=0; for i=5:5:length(v) sum=sum+v(i); end disp(sum)

Question: Write a program which takes a number as an input from the user and then using the for loop display all of its divisors.

Solution:

%Write a program which takes a number as an input from the user and then %using the for loop display all of its divisors.

n=x; for k=1:n if mod(x,k)==0 disp(k) end end Question: Write a program which compute the factorial of any number.

Solution:

%Calculate the factorial of any number. number=input(' Enter a number:'); fact=1; if number<0 fprintf(' The number you have entered is negative'); else for i=1:number fact=fact*i; end disp(fact); end

Question: Write a program in MATLAB that compute the following sum.

Solution:

%Write a program in MATLAB that compute the following sum. %[summation i=1:10 (3x^i)]. syms x sum=0; for i=1:10 sum=sum+3*x^i; end disp(sum)

Solution:

%Write a program in MATLAB that compute the following sum. %[summation j=1:6 summation i=1:5 (3^(i+j)]. sum=0; for j=1:6 for i=1:5 sum=sum+3^(i+j); end end disp(sum) Question: Write a program which prints all the numbers divisible by 3 and 5 for a given number.

Solution:

%Write a program which prints all the numbers divisible by 3 and 5 for a given number.

n=x; for (k=1:n) if mod(k,3)==0 && mod(k,5)==0 disp(k) end end

Lecture # 11

Question: Write a function with name 'myfunction' which takes any two numbers as an input and returns the greater number.