## Excel in math and science

### Master concepts by solving fun, challenging problems.

## It's hard to learn from lectures and videos

### Learn more effectively through short, conceptual quizzes.

## Our wiki is made for math and science

###
Master advanced concepts through explanations,

examples, and problems from the community.

## Used and loved by 4 million people

###
Learn from a vibrant community of students and enthusiasts,

including olympiad champions, researchers, and professionals.

## Comments

Sort by:

TopNewestIn computer languages, it could mean the fractional part of \(a+b\). – Mark Hennings · 3 years, 10 months ago

Log in to reply

frac(a+b) has no meaning because "frac" takes two arguments (top and bottom). – Michael Tang · 3 years, 10 months ago

Log in to reply

a/b – Bobby Jim · 3 years, 10 months ago

Log in to reply

– Ton De Moree · 3 years, 10 months ago

No, that would be frac(a,b), or in LaTeX frac{a}{b}Log in to reply