Question

{y|y∈R} What does this mean?

Answer 1

It's for the range of f(x) = log5x. Does it mean all real numbers?

Answer 2

Yep.

Answer 3

okay that's all i need to know thank you!

Answer 4

yes that is correct

Answer 5

The outer curly braces means "set"

saying {1,2} means "the set of the numbers 1 and 2"

saying {y} means the set of y values

adding on "y∈R" means y is a real number

The vertical bar means "such that"

Answer 6

so put that all together and "{y|y∈R}" means "the set of y values such that y is a real number"

Answer 7

ooooh okay. that was really helpful thanks

Answer 8

no problem

Answer 9

right you would do what jim_thompson5910 did