how can i make an iterative solve in my finction

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wassim boulala 2020-4-30

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关闭： MATLAB Answer Bot 2021-8-20

hi everyone ,

am trynig to make a function of two inputs .in this function it might be have an iterative equation ;

the inputs are :

Tm and d , Tm is a normal value and d is a vector

first i caculate L_0 which is

L_0=9.81*T^2/2*pi

and comes the iterative equation

L=L_0*tanh(2*pi*d./L)

how can i make this eteative equation in my function? help me please

thank you

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Ameer Hamza 2020-5-1

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Try this

L = fun(1, 2, 100) % run for 100 iterations
function L_plus_1 = fun(T,d,N) % N is number of iterations
    L_0 = 9.81*T^2/2*pi;
    L_1 = L_0*ones(size(d));
    L_plus_1 = zeros(size(d));
    for i=1:N
        L_plus_1 = L_0*tanh(2*pi*d./L_1);
        L_1 = L_plus_1;
    end
end