Find the domain?

0 ⤊

F(t) = 4.5e^t

2007-11-08 10:48:14 · 3 answers · asked by nghlife 1 in Science & Mathematics ➔ Mathematics

3 answers

F/4.5 = e^t
ln (F/4.5) = t ln(e) = t
t = ln(F/4.5) = ln(F) - ln (4.5)
t ~ ln(F) - 1.5
Therefore there is a one-to-one correspondence for the function for all t > 0 (domain).

2007-11-08 10:58:24 · answer #1 · answered by Shh! Be vewy, vewy quiet 6 · 0⤊ 0⤋

Nothing funny going on. It's all of the reals.

The range, on the other hand, is only the positive reals.

2007-11-08 22:09:48 · answer #2 · answered by Curt Monash 7 · 0⤊ 0⤋

the domain should be all reals. That is negative infinity to positive infinity

2007-11-08 18:53:52 · answer #3 · answered by ..k.. 2 · 0⤊ 0⤋