create a while loop when y=summation(((-1)^n)/(1+3^n))) and add in terms until the difference between consecutive terms in 10^-6 in matlab

main.m
n = 0;
y = 0;
term = 1;

while abs(term) > 1e-6
    term = (-1)^n / (1 + 3^n);
    y = y + term;
    n = n + 1;
end

y
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