Question

isplays l itnuml is less than num2. 2. (50+30- 80 Points) Write a MATLAB function numcomp502 (numl, num2) that takes two numbers numl and as input and returns num3 as output, such that num3 is equal to 0, 1, and-1 depending on whether numl is equal to, greater than or less than num2 respectively. Test your code with the pairs (10, 5), (-3,-3), and (2, 10) as input. Attach a screen-shot. 3. 80 Points Write a matlab function myquad (a, b, c) that returns the roots of a quadratic equation ax2+ bx + c 0. The algorithm you need to use: Test whether the equation is a true quadratic or not by checking whether a is non- zero. If a . 0, (the equation is not a true quadratic) two situations exist o If b o Else, we have a case with a single root r-c/b . 0, it is the case of a trivial solution If aヂ0, three situations exist depending on the value of the discriminant, d b2-4ac, · o If d 0, we have two equal real roots o lf d > 0, we have two unequal real roots o If d < 0, we have two imaginary roots In all cases display an appropriate message and the values of the roots on the terminal as well. . 4. 100 Points Write a function check504 (X) that takes a vector X as input and displays an error message on the terminal unless every element is nonzero. In cas message indicating error. You have the flexibility to define your messages. The example below e none of the element is zero, it will display another

Need help with number 3, thanks!

Answer 1

function [root1, root2]=myquad(a, b, c)
  if a!=0
    D=b^2-4*a*c;
    if D<0
        fprintf('\nThe equation has no real roots.\n\n') ;
        end
    elseif D==O
        root1=b/(2*a);
        root2=b/(2*a);
        fprintf('\nThe equation has one root,\n'); 
        fprintf(' %.3f\n\n',root1);
        end;
    else
        root1=(-b+sqrt(D))/(2*a);
        root2=(-b-sqrt(D))/(2*a);
        fprintf('\nThe equation has two roots,\n') ;
        fprintf(' %.3f and %.3f\n\n',root1,root2);
        end
  end
  else
    fprintf('\nThe equation is not a quadratic equation,\n');
  end
end