My Math Forum  

Go Back   My Math Forum > Science Forums > Computer Science

Computer Science Computer Science Forum


Reply
 
LinkBack Thread Tools Display Modes
January 28th, 2017, 03:57 AM   #1
Newbie
 
Joined: Mar 2016
From: Alabama

Posts: 11
Thanks: 0

Another Boolean question

Wolfram|Alpha: Computational Knowledge Engine
Wolfram|Alpha: Computational Knowledge Engine

Why is the first link a tautology and the second not? Why is bringing "(X||Y)&&(X nand Y)" to the front a mistake?

(Edit: The forum software automatically put the end url markers at the wrong place. It was confused by all the parentheses.)

Last edited by zambod; January 28th, 2017 at 04:01 AM.
zambod is offline  
 
January 29th, 2017, 04:45 AM   #2
Senior Member
 
Joined: Feb 2016
From: Australia

Posts: 856
Thanks: 312

Math Focus: Yet to find out.
Why wouldn't it be? But have you double checked your brackets?
Joppy is offline  
February 3rd, 2017, 10:58 AM   #3
Member
 
Joined: Feb 2014

Posts: 79
Thanks: 1

A tautology happens when all conditions are true no matter what. Using a truth table you will be able to figure this out.
The_Ys_Guy is offline  
February 3rd, 2017, 06:43 PM   #4
Senior Member
 
Joined: Feb 2016
From: Australia

Posts: 856
Thanks: 312

Math Focus: Yet to find out.
Quote:
Originally Posted by The_Ys_Guy View Post
A tautology happens when all conditions are true no matter what. Using a truth table you will be able to figure this out.
I don't think that's what he was asking. And.. 4 input system will give 2^4 output very arduous by hand.
Joppy is offline  
Reply

  My Math Forum > Science Forums > Computer Science

Tags
boolean, question



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Boolean algebra simplification using boolean rules JustForFun2000 Computer Science 2 September 26th, 2016 09:11 AM
Boolean Algebra basics question topsquark Abstract Algebra 5 September 12th, 2014 03:48 PM
Boolean Algebra sailorman444 Algebra 1 January 9th, 2014 08:21 AM
Another boolean question Airmax Applied Math 2 March 3rd, 2008 08:01 PM
Basic Boolean Question Airmax Applied Math 2 February 24th, 2008 10:47 PM





Copyright © 2017 My Math Forum. All rights reserved.