i need help on making loop for given equation

hello professionals.. I have problem in making loop for given equation ab-cd=1..in this i have to choose random value for a and c but b and d are previously calculated.if value of ab-cd equal to one then display otherwise goes to step where a and c are randomly selected.can u plz help me regarding this..thanks alot

Answer 1

[Ammar]

for i = 1:M

    a = rand(1);
    c = rand(1);

    res = a*b - c*d;

    if res == 1
       disp('')
    end

end

Answer 2

[rjnt Kaur]

Thanks alot for your suggested code..it works..but i forget to write one thing..the actual equation is a*b-c*d*(t-1)=1 where a and c are selected randomly and b,d and t are previously calculated these value should satisfy the above equation until the equation become equal to one and then display the value of a and c...thanks