# Math Help - Deriving an equation

1. ## Deriving an equation

exp[m1t-m2t-m3t] mew-number bottom right-t

Since t is common to each, there must be a better way of writing that. I am using equation editor with word, which doesn't paste here. Any help gratefully received.

2. Originally Posted by Mashu
exp[m1t-m2t-m3t] mew-number bottom right-t

Since t is common to each, there must be a better way of writing that. I am using equation editor with word, which doesn't paste here. Any help gratefully received.
is this the expression you mean to post?

$e^{\mu_1t - \mu_2t - \mu_3t}
$

... and what do you want done with it?

3. I think you want $e^{-\mu_1t- \mu_2t- \mu_3t}= e^{-(\mu_1+\mu_2+\mu_3)t}$.

By the way, the standard English transliteration of the Greek letter $\mu$ is "mu", new "mew".