whatif5_1
y =
2*exp(-3*t)+6*exp(-3*t)*t
simple(y)
simplify:

2*exp(-3*t)+6*exp(-3*t)*t

radsimp:
 
2*exp(-3*t)+6*exp(-3*t)*t
 
combine(trig):
 
2*exp(-3*t)+6*exp(-3*t)*t
 
factor:
 
2*exp(-3*t)*(1+3*t)
 
expand:
 
2/exp(t)^3+6/exp(t)^3*t
 
convert(exp):
 
2*exp(-3*t)+6*exp(-3*t)*t
 
 
convert(sincos):
 
2*exp(-3*t)+6*exp(-3*t)*t
  convert(tan):
 
2*exp(-3*t)+6*exp(-3*t)*t
  
collect(t):
 
2*exp(-3*t)+6*exp(-3*t)*t
--------------------
ans =
 2*exp(-3*t)*(1+3*t)
 
dir
whatif5_1.dir 
whatif5_1.m   
diary off