solve system of ODE equations

Hii everyone .. pls help me solving the following system of equations dydt(1) = -A*y(1)-((B*y(1)^2)/(t^0.5))+C*y(2); dydt(2) = ((0.5*B*y(1)^2)/(t^0.5))-C*y(2);

A = 0.000001; B = 0.05; C = 0.15; tspan = [0 10]; y0 = [0 0.0001];

please help

[M]

Duplicated post with https://fr.mathworks.com/matlabcentral/answers/371663-results-is-nan-help