Problem 1.3 Write a function named sumnots that computes the sum of all entries of the input matrix that are not equal to 3. Function Save C Reset DI MATLAB Documentation 1 function mod_sum = sumnot3(A) 2 [rows cols] = size(A); 3 mod_sum = 0.0; 4 % code to add to mod_sum entries of A not equal to 3 5 end Code to call your function C Reset 1 sumnot3([1 2 3; 4 5 6; 7 8 9]) 2 sumnot3([3 3 3 3; 3 3 3 3]) 3 sumnot3(1 1 1 1; 1 1 1 1]) % correct answer 1+2+4+5+6+7+8+9=42 % correct answer o % correct answer 8