Class 11 Logic and Philosophy Important Chapter 4 Symbolic Logic

Class 11 Logic and Philosophy Important Chapter 4 Symbolic Logic Solutions English Medium As Per AHSEC New Syllabus to each chapter is provided in the list so that you can easily browse through different chapters ASSEB Class 11 Logic and Philosophy Important Solutions and select need one. AHSEC Class 11 Logic and Philosophy Additional Notes English Medium Download PDF. HS 1st Year Logic and Philosophy Important Solutions in English.

Class 11 Logic and Philosophy Important Chapter 4 Symbolic Logic

Also, you can read the NCERT book online in these sections Solutions by Expert Teachers as per Central Board of Secondary Education (CBSE) Book guidelines. ASSEB Class 11 Logic and Philosophy Additional Question Answer are part of All Subject Solutions. Here we have given HS 1st Year Logic and Philosophy Important Notes in English for All Chapters, You can practice these here.

Symbolic Logic

Chapter: 4

IMPORTANT QUESTION AND ANSWER

Short Questions and Answers:

1. What is a negation function?

Ans: If p is a statement, then the statement formed by prefixing it with “not” or “it is false that” is called the negation of p. It is denoted as ~p.

2. What is a disjunctive function?

Ans: A compound statement formed by connecting two simple statements using the constant symbol “or” (v) is called a disjunctive function.

3. What is an implication or conditional function?

Ans: If p and q are two statements, then a compound statement in the form of “if p, then q” is called an implicative or conditional function.

4. What is a logical constant?

Ans: Symbols that consistently express the structure of compound statements and always carry the same meaning in any context are called logical constants.

5. Name the five basic truth-functions.

Ans: (i) Negation function.

(ii) Conjunctive function.

(iii) Disjunctive function.

(iv) Implicative function.

(v) Biconditional (Equivalence) function.

6. What is the connector of p.q?

Ans: p and q are joined in a conjunctive function known as the connector of p.q.

7. What is a variable?

Ans: A variable is a symbol that can be replaced by any value from a given domain.

8. How many variables are in a conjunctive function?

Ans: A conjunctive function contains two variables.

9. What is a disjunctive function?

Ans: A compound statement formed by connecting two simple statements using the symbol “or” (v) is called a disjunctive function.

10. When is a statement considered logically false?

Ans: If under the column of the main logical constant, all truth-values are F (false), then the statement is said to be logically false.

Fill in the Blanks:

1. Compound statements of the form “if p then q and if q then p” are called __________.

Ans: Biconditional (equivalence) function.

2. A compound statement formed by connecting two simple statements with the constant symbol “or” (v) is called __________.

Ans: Disjunctive function.

3. Within a definite domain, the value of these symbols is __________.

Ans: Variable (changeable).

4. The five basic truth functions are: negation, conjunction, disjunction, __________, __________.

Ans: Implication, equivalence.

5. In propositional logic, there are five basic __________.

Ans: Truth functions.