When a criticallydamped RLC circuit having i0 vc0 0 is exc

When a critically-damped RLC circuit having i(0) = vc(0) = 0 is excited by a voltage source vs(t) = V teat where a = R/2L, the loop current is given by i(t) =(V/ 2L)(t^2*e^at(1( at/ 3)).

i need matlab or octave code

Solution

>> L=0.1;

>> C=0.001;

>> R=25/3;

>> t=0:0.001:0.12;

>> v=B1*exp(-a*t).*cos(wd*t) + B2*exp(-a*t).*sin(wd*t);

>> hold off

>> plot(1000*t,v,\'b+-\')

>> hold on