How to Plot an Exponential Process given equation

Hello, I genuinely need some help with my code. I am trying to plot the solution of a differential equation over an interval but it won't run.

t= 0:0.1:10; %This is the interval I need

concentration= 1.* exp(-1.*t) %This is the equation C(t)= C0* e^-kt

The initial condition is C=C0 at t=0

c0= 1 and k=1

I need to plot C(t) vs. t from 0 to 10 seconds . Please help me figure out this code.

Answer 1

[Voss]

t= 0:0.1:10; %This is the interval I need 
concentration= 1.* exp(-1.*t); %This is the equation C(t)= C0* e^-kt

plot(t,concentration)