creating 2 by 2 matrices having 3 entries same in all but 4th one different

i want to create a series of matices m1,m2,m3,m4 etc such that

m1=[1 0; 0 f(x1)]

m2=[1 0;0 f(x2)]

and so on.(only 22 entry is having a functional value and other 3 entries remain same.

x=[x1 x2 x3.....]

f is any arbitrary function.

and i also need to find out how to multiply all the above matrices such that m=m1*m2*m3.......*mn

kindly help

Answer 1

[Andy]

Rather than using numbers as part of the variable name use a cell structure

m{1} = [1 0; 0 f(x(1))]

You can then easily use a loop to generate the initial matrices and multiply them.