π^26=11^2+12^2+13^2++1n^2用MATLAB写一段代码求π的近似值且当n分别取100、1000、10000时结果是多少？ 要求用循环函数实现

clear clc n = [100,1000,10000]; for i = 1:length(n) sum = 0; for j = 1:n(i) sum = sum + 1/j^2; end pi_approx = sqrt(6*sum); disp(['n = ',num2str(n(i)),', pi approx = ',num2str(pi_approx)]) end