Thread: universe of discourse

determine whether it is true when the universe of discourse to be R and using only symbols from the following list,,
this question is about AND OR conjunction ,disjunctions,,
details about question are in the attachment,,
i can't type the symbols,,
so plz read the attachments,,
any help is appreciated.
thank you

Originally Posted by ives

determine whether it is true when the universe of discourse to be R and using only symbols from the following list,,
this question is about AND OR conjunction ,disjunctions,,
details about question are in the attachment,,
i can't type the symbols,,
so plz read the attachments,,
any help is appreciated.
thank you

For all who cannot read the attachement it says

Is that true on the domain, or on .
On let . Is it true?

What about on ?

i get a question, is the domain for x=yy affect the domain of yy+x=0

x = yy has all real numbers as its domain.
yy + x = 0 <=> x = -yy has all real numbers as its domain as well.

(graph these parabolas for a graphical arguement)

domain for x=yy can't be all real numbers , cuz yy>=0

Sorry, let me add an extra step.

If the domain refers to the x-axis, then all the real numbers are the domain (no restriction on x)
The range would then be the y-axis, which has a limitation, which you mentioned to be yy>=0, or specifically, that y > 0.