USING MATLAB 4 Create the following matrix a Preallocate by

USING MATLAB

4. Create the following matrix

a) Pre-allocate by setting all elements to zero. Use two sequential for-loops and no if-statements.

b) Pre-allocate by setting all elements to zero. Use two nested for-loops with an if-elseif-statement.

c) Pre-allocate by setting all diagonal elements to one. Use a while-loop with no if-statements.

Solution

a) M=[]

for i=1:4

for j=1:4

M[i-1][j-1]=0

end

end

c) M[0][0]=1

M[1][1]=1

M[2][2]=1

M[3][3]=1

i=0

j=0

while(i>j)

{

while(!j<=i)

if(j<i)M[i][j]=-2

end

j++;

end

j=0

i++

end