TITLE: How is  $e^x$ read aloud?
QUESTION [38 upvotes]: My current research colleague from New Castle told me that I was reading it wrong. I usually read it as e power x.
How do you read aloud $e ^ x$?
Is it:

e raised to x
e power x
e powered x
or e raised to the power x.

What is the correct pronunciation?

REPLY [8 votes]: Given that your avatar is the infamous Wolfram|Alpha logo "hombic hexecontahedron", I suppose you're reasonably familiar with Mathematica.
If you have Mathematica handy, there is a systematic solution to this type of questions, viz. how to pronounce some mathematical expressions in Engish, using Mathematica's SpokenString[] function.  For example,
In[19]:= SpokenString[e^x]

Out[19]= "e to the power of x"

Some more complex expressions such as $\int_0^1 \sin (x) dx$ which is written in Mathematica as Integrate[Sin[x], x, {x, 0, 1}] can evaluate by itself, and hence need to be wrapped with HoldForm and then passed to SpokenString[]:
In[21]:= SpokenString[HoldForm[Integrate[Sin[x], x, {x, 0, 1}]]]

Out[21]= "the integral of sine of x over x from 0 to 1, then with respect to x"

In[22]:= SpokenString[Integrate[Sin[x], x, {x, 0, 1}]]

Out[22]= "x minus x times cosine of 1"

I've heard that this (combined with Speak[]) is used to aid teaching blind and/or deaf people mathematics.