Even though I'm a math major graduating in May, this is the first time I've had a formal exposure to logic.(adsbygoogle = window.adsbygoogle || []).push({});

http://i111.photobucket.com/albums/n149/camarolt4z28/Untitled-1.png

I'm not sure on e) and f).

e)

x domain: all students in this class

y domain all department courses

z domain: all departments in this school

P(x,y,z): student x taken course y in department z

[itex]

\exists x \exists z \forall y P(x,y,z) [/itex]

f)

x, y domain: students in this class

P(x,y): student x grew up in same town as student y

[itex]

\exists x \exists! y [P(x,y) ∧ (x\neq y)] [/itex]

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Discrete Math

**Physics Forums | Science Articles, Homework Help, Discussion**