Troubles with a loop to calculate wavelength

Hi! I want to obtain the wavelength of a water wave, this is achieved iterating the following formula:

L=(g*Tp.^2)./(2*pi).*tanh(h./L);

the problem is that i have to try with several wave periods (Tp), every time i have tried to make a loop to make it work, different mistakes have appeared:

Below are the options that i have tried

Tp is a vector with a length of 87664* all of them are positive

Option A)

g = 9.81;% (m/s^2)

for i=Tp

c = g*i.^2/(2*pi());

hp = 6.6; %depth (m)

vi=100;

Tanhip = @(LdO)tanh(2*pi()*hp./LdO);

fLdO = @(LdO)LdO-c*Tanhip(LdO);

LdO = fsolve(@(LdO)fLdO(LdO),vi)

end

LdO is only one value and I need the solution for every save period so i hope a vector of 87664 too

Option B)

for i=Tp

L0=(g*i.^2)/(2*pi);

guess=L0;

L=(g*i.^2)./(2*pi).*tanh(d./guess);

diff=abs(L-guess);

while diff>0.1

guess=L+(0.5*diff);

L=(g*i.^2)./(2*pi).*tanh(d./guess);

end

end

This option never ends, busy appears all the time and i have to close the program

Option C)

for i=Tp

L0 = (g*i.^2)/(2*pi());

syms L

assume(L>=0) % tomar soluciones positivas

sol = solve(L - L0*tanh(2*pi()*d/L)== 0,L,'Real',true); % Tomar soluciones reales

Ldo = double(sol); % default numeric data type for MATLAB

end

This last option showed this message:

"Warning: Cannot find explicit solution.

>In solve (line 316)"

I hope you can help me, in advance thank you