Partial fraction of this expression?

[tinhnho]

hi everyone

i have a proplem with this excercise:
f(t)= (t+1)/(t^2 + 8t + 16)
Here what i started:

(t+1)/(t^2 + 8t + 16) = (t+1)/(t+4)^2

(t+1)/(t+4)^2 = K1/(t+4) + K2/(t+4)^2

i am stuck from here, anyone please help me, thanks first

 

[dextercioby]

What are you trying to do??
Put this
\frac{t+1}{(t+4)^{2}}

under this form:
\frac{A}{t+4}+\frac{B}{(t+4)^{2}}

??

How about writing
t+1=t+4-3

??

Daniel.

 

[tinhnho]

thanks, i got it