Matrix for two variables

2012 10 12
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I have 2 variables, a and b with respective values 1.123456789 and 3.123456789. Please help me to generate the matrix for the possible combination based on the formula 2^n, n = integer number 1 to 50. E.g if n=3, the output should be a matrix of 8 by 3:
1.123456789 1.123456789 1.123456789
1.123456789 1.123456789 3.123456789
1.123456789 3.123456789 1.123456789
1.123456789 3.123456789 3.123456789
3.123456789 1.123456789 1.123456789
3.123456789 1.123456789 3.123456789
3.123456789 3.123456789 1.123456789
3.123456789 3.123456789 3.123456789

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Azzi Abdelmalek
Azzi Abdelmalek 2012-10-12
编辑：Azzi Abdelmalek 2012-10-12
what is the link between a, b and 2^n. Combinaison of what?

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Andrei Bobrov
Andrei Bobrov 2012-10-12
编辑：Andrei Bobrov 2012-10-12

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use function ff2n from Statistics Toolbox
n = 3;
a = [1.123456789 , 3.123456789];
ii = ff2n(n)+1;
out = a(ii);

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Enfa White
Enfa White 2012-10-15
The a and b values generated by ff2n is a matrix of 8 by 3 (for n=3). How can I use these a and b as the input values for the following function:
function my_func = out(~,~)
x = (1+sin(5*a)-(1/sqrt(8*(sin(a))))) y = (1+sin(5*b)+(1/sqrt(8*(sin(b)))))
out=(2*(x+y))/2+x

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