http://en.wikipedia.org/wiki/Set_(mathematics)
this is what I founded in 1 min., just google it... and you will find what you want.
Well I was wondering if there is a method which some one follows to solve questions like these..
Here is an example
The square of every real number is a non-negative number
(for all x)(x element of Z) --> (x^2>0)
is this how you write it ? btw I used A upside down for (for all x)
if you can kindly post any websites that teaches how to master this
Thanks
http://en.wikipedia.org/wiki/Set_(mathematics)
this is what I founded in 1 min., just google it... and you will find what you want.
Hello Khonics89You have nearly got it right. We usually use to denote the real numbers, and 'non-negative' means 'greater than or equal to zero'. So the correct answer would be:
If you want some on-line material that introduces Logic to a beginner, you'll find some notes (with lots of worked examples and exercises) that I wrote for Wikibooks starting just here. And in particular, the use of quantifiers is covered just here.
Grandad