Talk:Lambert's W function

Would it be possible to add a helpful definition of:

W[f(x) e^f(x)] = f(x)

It's not entirely clear from the definition above, but you can clearly see this in the example below. —The preceding unsigned comment was added by 68.144.28.252 (talk • contribs) .

Multivalued Interval

"Since the function f is not injective in (−∞, 0), the function W is multivalued in [−1/e, 0)."

Should it be added that when considering theextended reals, the interval is actually [-1/e,0]? Keep in mind, 0e^0 = 0, and −∞e^−∞ = 0. (the extended reals define exp^(−∞) = 0). -- He Who Is^{[ Talk ]} 22:00, 25 July 2006 (UTC)

Move "Lambert's W function" to "Lambert W function"

The "Lambert W function" is correct.