Matlab计算π/2=1+(1/3)+(1/3*2/5)+(1/3*2/5*3/7)+...怎么计算π的值?.

Matlab计算π/2=1+(1/3)+(1/3*2/5)+(1/3*2/5*3/7)+...怎么计算π的值?.
Matlab计算π/2=1+(1/3)+(1/3*2/5)+(1/3*2/5*3/7)+...怎么计算π的值?
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Matlab计算π/2=1+(1/3)+(1/3*2/5)+(1/3*2/5*3/7)+...怎么计算π的值?.
n=100;
half_pi=1;
Ak=1;
for k=2:n
Ak=Ak*(k-1)/(2*k-1);
half_pi=half_pi+Ak;
end
pi=half_pi*2