3- a. Declare two variables nRow =10, ncol=20. b. Declare a (10x20) matrix called z with random entries using randn command c. You need to find the minimum value of the matrix using two nested for loops. i. Do not use the buid-in min() function ii. Initialize the minimum value MIN=z(1,1). This initialization step is required. iii. Use two nested for loops to go over each element in z iv. Use if statement within the inner loop to test the new value < MIN as follows: if (z(r,c) < MIN) end MIN=z(r,c); d. Outside the nested loop, use the build-in min() as shown below to test the your algorithm MIN1= min(min(z)) MIN and MIN1 should have the same value. Test it by using the following code if (MIN==MIN1) disp('Minimum value is found'); else end disp(srtcat('MIN=',num2str(MIN)); dis('Minimum Algorithm Failed');