Computer Science, asked by jahanvinag6375, 9 months ago

if A denotes"has a computer/mobile" and B denotes "uses e-mail", then express the following symbolic form in statement:1. B=>A 2. -B=>-A ​

Answers

Answered by gauravarduino
3

Explanation:

if A denotes"has a computer/mobile" and B denotes "uses e-mail", then express the following symbolic form in statement:1. B=>A 2. -B=>-A

Answered by NirmalPandya
1

1. If a person uses e-mail, it is true that he has a computer/mobile.

2. If a person doesn't use e-mail, it implies that person does not have a mobile/computer.

  • "=>" sign is the implication sign and "-" is negation sign.  
  • It means that if condition on left side of "=>" holds true then it implies that right side also holds true.
  • We are given A denotes "has a computer/mobile."
  • We are given B denotes "uses e-mail"
  • ∴ B => A means that is a person uses e-mail it implies that he has a computer or a mobile.
  • -B=>-A means negation of B implies a negation of A.
  • It means that if statement B is false, statement A will also be false.
  • It means that if a person does not use e-mail, it implies that he doesn't have a mobile/computer.
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