how to represent a base number

please tell how to represent xi-1^2. i.e not xi-(2). i want x(i-2)

[Stephen23]

It is not clear what you want, because you have written two different things. No matter how many times your exponentiate 1 (e.g. your example 1^2) the output will never equal 2.

MATLAB does not have implicit multiplication, so you need to use a * sign.

Answer 1

[Stephen23]

Do you want this:?

>> x = 3;
>> x*(1i-2)
ans = -6 + 3i

[praveena maddamsetty]

no what i want is if you have any idea regarding bbs algorithm then you can get my point. i want to code the bbs algorithm

[Stephen23]

The BBS algorithm is trivial, but keep in mind the limits of floating-point numbers!

N = 6;
M = 987654321;
X = 123456789
for k = 1:N;
    X = mod(X^2,M)
end

displays this in the command window:

X =  123456789
X =  478395062
X =  281394656
X =  325603120
X =  147470912
X =  750037428