Quiz 5 (Program Verification) Q1 1 Point Which of the following is a valid Hoare Triple? (x < 0) {xx*x} (x > 0) ✪ (x < 1) {x=x+1} O (x < 2) {xx+1} (x> 2) ○ (x3) {xx * 2} (x <4) Q2 1 Point (x=x+1) Which of the following is not a valid Hoare Triple? O (x = 5) {xx*2} (1+1=2) O (1+1=2) { <5} (x = 5) Ⓒ (x> 0) {xx+1} ○ (x> 0) {x x* x} (x=x+1) (x0)

Quiz 5 (Program Verification) Q1 1 Point Which of the following is a valid Hoare Triple? (x < 0) {xxx} (x > 0) ✪ (x < 1) {x=x+1} O (x < 2) {xx+1} (x> 2) ○ (x3) {xx 2} (x <4) Q2 1 Point (x=x+1) Which of the following is not a valid Hoare Triple? O (x = 5) {xx2} (1+1=2) O (1+1=2) { <5} (x = 5) Ⓒ (x> 0) {xx+1} ○ (x> 0) {x x x} (x=x+1) (x0)

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Programming language: Java
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(5>1)||(1<0) A) True B) False
1) Let A = {x EN: x - 16 = 0}. Rewrite A in roster notation. |A| = 2) Let B = {x E Z : x² – 16 = 0}. Rewrite B in roster notation. \B| = 3) Let C = {x E Z : x² – 48 = 0}. Rewrite C in roster notation. |C| =
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T/F 9) Since iterative solutions often use loop variables and recursive solutions do not, the recursive solution is usuallymore memory efficient (uses less memory) than the equivalent iterative solution
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