exponential decay function y = exp*(-Tau.time)

Another exponential decay function I am having problem with: Need to write script to plot the following equation

y = exp ^ -(timeconstant*time)

prompt the user for beginning and ending values of time vector.

prompt the user for two values of timeconstant

Now, calculate two different y vectors

Here is what I did:

timeconst1 = input('Please enter the first value of time constant: ');

timeconst2 = input('please enter the second value of time constant: ');

initial = input('Please enter the beginning value of time: ');

final = input('Please enter the ending value of time: ');

vec = initial:final;

yinitial = exp(-timeconst1*vec)

plot(initial,yinitial,'r*')

hold on

yfinal = exp(-timeconst2*vec)

plot(final,yfinal,'c*')

Answer 1

[Mischa Kim]

Hi Nabin, to help with readability I have slightly re-formatted the code and re-named some variables:

 tau1 = 1;
 tau2 = 2;
 ti   = 1;
 tf   = 10;

 t        = linspace(ti,tf,20);
 yinitial = exp(-tau1*t);
 yfinal   = exp(-tau2*t);
 plot(t,yinitial,'r*') 
 hold on
 plot(t,yfinal,'c*')
 hold off

Answer 2

[ZUBAIR WAR]

tau1 = 1;

tau2 = 2;

ti = 1;

tf = 10;

t = linspace(ti,tf,20);

yinitial = exp(-tau1*t);

yfinal = exp(-tau2*t);

plot(t,yinitial,'r*')

hold on

plot(t,yfinal,'c*')

hold off