17. Express these system specifications using the propositionsp: The user enters a valid passwordq: Access is grantedr: The user has paid the subscription feea) The user has paid the subscription fee, but does not enter a valid password.b) Access is granted whenever the user has paid the subscription fee and enters a validpassword.c) Access is denied if the user has not paid the subscription feed) If the user has not entered a valid password but has paid the subscription fee, then accessis granted.18. Use truth tables to verify the followings:a) (p ^ q) = ¬V¬q.b) p q and¬q→ ¬p19. Show that each of the following conditional statements is a tautology without using truthtables.a) (p ^ q) P = Tb) p → (pv q) = T

Answered: Image /qna-images/answer/1f516270-5fd3-46d6-8d38-417a796ff153.jpg

Answered: 17. Express these system specifications…

Elementary Geometry For College Students, 7e

7th Edition

ISBN:9781337614085

Author:Alexander, Daniel C.; Koeberlein, Geralyn M.

Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.

ChapterP: Preliminary Concepts

SectionP.1: Sets And Geometry

Problem 36E

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