How do I plot this as a unit step response

C(t) = 0.5(1 - e^-2t)

Answer 1

[Star Strider]

If you just want to plot it, the eassiest way is first to code it correctly, then use fplot.

syms t 
C(t) = 0.5*(1 - exp(-2*t))

C(t) = 

figure
fplot(C, [0 5])
grid
xlabel('t')
ylabel('C(t)')

.

Answer 2

[Girijashankar Sahoo]

plot([0:0.001:10],0.5*(1 - exp(-2*t)))