Question

What does a less than or greater sign with two lines underneath it mean?

Answer 1

less or equal to

Answer 2

like this?

Answer 3

No, like this

Answer 4

For example, The domain of the square root of (4-x) divided by x is x(less than with two lines underneath), x cannot equal zero. Which my book says is shorthand for writing x is real, x<0, and x (less than with two lines underneath) 4.

Answer 5

I honestly don't know, and I don't want to guess. sorry :l

Answer 6

Thanks anyway

Answer 7

scroll down and you will see it...
http://en.wikipedia.org/wiki/List_of_mathematical_symbols