Question

In: Computer Science

Use the resolution method to decide if the following formulas are valid or not. If the...

Use the resolution method to decide if the following formulas are valid or not. If the formula is valid, provide a resolution proof; if it is not valid, provide an interpretation which falsifies the formula.

(a) (A↔(A∧B))→(A→B)

Expert Solution

[distributive law and demorgans law]

[distributive law]

[demorgans law]

Hence the given statement: comes out to be true. Thus, it is valid.

**NOTE: If you understood the solution, please upvote the solution as it means a lot. If you have any doubt, feel free to comment below. Thanks!!

venereology answered 8 months ago

Explain the steps of the scientific method. Explain the use of logic to reach a valid...

Explain the steps of the scientific method. Explain the use of logic to reach a valid conclusion.

QUESTION 5 Decide in each of the following instances whether the contract is valid, void or...

QUESTION 5 Decide in each of the following instances whether the contract is valid, void or voidable. Motivate your answers. 5.1 Grace orders an oval-shaped swimming pool to be delivered, but the pool company delivers a square-shaped pool. (2) 5.2 Rob phones Lindsay’s home number and makes her a job offer. The next morning Lindsay’s sister, Janine, comes to work for him. Rob discovers that the offer was made to the wrong person. (2) 5.3 A traditional healer tells his...

Which of the following is not a valid method for making a decision about a hypothesis...

Which of the following is not a valid method for making a decision about a hypothesis test? A. Compare the test statistic Z0 to the critical region B. Compare μ to an appropriate OC curve C. Compare μ0 to a confidence interval D. Compare P-value to α

Which of the following is not a valid method for determining life insurance needs? Group of...

Which of the following is not a valid method for determining life insurance needs? Group of answer choices The Financial Needs Method. The Human Life Value Method. The Dependency Method. The Capitalization of Earnings Method.

Smith’s Department Store needs to decide which advertising budgeting method to use. The following information is...

Smith’s Department Store needs to decide which advertising budgeting method to use. The following information is needed to calculate Smith’s advertising budget using all three methods. Affordable Budget Method Last year’s sales were $9,815,000 and are projected to increase by 4.5% for next year. Last year’s expenses were 41% of last year’s sales and are projected to decrease by 1.5% for next year. Last year the business earned a profit of $4,587,600. Profit is expected to increase by 2% over...

Use Both the Replacement Chain Method and the Equivalent Annual Annuity Method to decide which projects...

Use Both the Replacement Chain Method and the Equivalent Annual Annuity Method to decide which projects are the best: Bob the builder is deciding between two mutually exclusive projects. The first project is 3 years long with an initial cash outflow of $13000 and expected annual inflows of $5000. The second project is 6 years long with an initial cash outflow of $15000 and annual cash inflows of $3500. The cost of capital is 10%.

107) Which of the following is a valid shortcoming of the use of foreign aid to...

107) Which of the following is a valid shortcoming of the use of foreign aid to eradicate poverty? 107) A) It can lead to polarization of the world economy. B) It is difficult to transfer aid to poor countries. C) It mostly leads to the transfer of resources among rich countries. D) It may not lead to a sizeable increase in physical capital in poorer countries. 108) Which of the following statements is true of foreign aid? 108) A) Foreign...

use truth tables to determine whether or not the following arguments are valid: a) if jones...

use truth tables to determine whether or not the following arguments are valid: a) if jones is convicted then he will go to prison. Jones will be convicted only if Smith testifies against him. Therefore , Jones won't go to prison unless smith testifies against him. b) either the Democrats or the Republicans will have a majority in the Senate. but not both. Having a Democratic majority is a necessary condition for the bill to pass. Therefore, if the republicans...

Given the following method declaration, write a valid method call. public static void calcArea(String roomName, int...

Given the following method declaration, write a valid method call. public static void calcArea(String roomName, int length, int width)

High-Low Method, Cost Formulas During the past year, the high and low use of three different...

High-Low Method, Cost Formulas During the past year, the high and low use of three different resources for Fly High Airlines occurred in July and April. The resources are airplane depreciation, fuel, and airplane maintenance. The number of airplane flight hours is the driver. The total costs of the three resources and the related number of airplane flight hours are as follows: Resource Airplane Flight Hours Total Cost Airplane depreciation: High 44,000 $ 18,400,000 Low 28,000 $ 18,400,000 Fuel: High...