What are the reasoning methods for blunt propositional syllogisms

There are two kinds of straightforward propositional reasoning mantras:

1. Known true and false problems.

Solution: Add "not" before the original proposition to get a new proposition - find the equivalent proposition of the new proposition or launch the proposition in the options - select this option.

2. Known false truth-seeking problems.

Solution: Add "not" before the original proposition to get a new proposition - find the equivalent proposition of the new proposition in the options - select this option.

Straightforward proposition contradictory relationship:

1) Contradictory relationships between outspoken propositions.

All are "and some not";

All not" and "some are";

A certain is" and a "certain not".

2) With the help of truth and falsehood.

Examine contradictory relationships.

identify two propositions that are contradictory to each other;

Bypass the contradictory relationship, combine the known conditions, and judge the truth or falsity of the remaining propositions;

The truth or falsity of contradictory propositions is judged by the truth or falsity of the remaining propositions.

1. The masses are the real heroes, I am the masses, so I am the real heroes. (violates the rule that a syllogism can only have three concepts).

2. Wheat is edible, and rice is also edible, so rice is wheat. (violates the rule that the term is extended at least once).

3. Nouns are real words, and verbs are not nouns, so verbs are not real words. (The rule that what is not in the premise is not allowed in the conclusion is violated.)

4. Tigers are not vegetarians, and giraffes are not tigers, so giraffes are not vegetarians. (violates the rule that two negative premises cannot be concluded).

5. Some young people are Chinese, and some Shandong people are not young people, so some Shandong people are not Chinese. (violates the rule that the premise of the two special names cannot be concluded).

Examples of syllogisms in life:

1. All mammals have vertebrae, and man is a mammal, so man has a vertebrae.

2. All mobile phones need to be charged, iPhone is a mobile phone, and iPhone needs to be charged.

3. All ice dismantling and bending boxes can be refrigerated, Xiao Ming's family has a refrigerator, and Xiao Ming's refrigerator can be refrigerated.

4. The people who take classes in the university are all boring students, and I take classes in the university, so I am a student.

5. The players who won the S9 game are all members of the IG team, and The Shy won the S9 game, so The Shy is a member of the IG team.

There are two main distinctions between the three servants: paragraph theory reasoning and conditional reasoning

1.The structure is different: syllogism is a simple inferential judgment in deductive reasoning, which includes a proposition with a major term and a middle term (major premise), a proposition with a minor term and a middle term (minor premise), and a proposition with a small term and a major term (conclusion), while conditional reasoning determines the result of the reasoning according to the logical properties of the necessary conditional hypothetical proposition.

2.The way of reasoning is different: syllogism reasoning starts from a general premise and derives individual conclusions, while conditional reasoning is more akin to a conditioned reflex that makes inferences based on given conditions.

In general, syllogism and conditional reasoning have obvious differences in structure and reasoning.

The structure is not the same.

Syllogism reasoning is a simple reasoning in deductive reasoning, which includes: There are three parts: a proposition with a major term and a middle term (major premise), a proposition with a minor term and a middle term (minor premise), and a proposition with a small term and a major term (conclusion).

Conditional reasoning determines the result of reasoning according to the logical characteristics of the hypothetical proposition of the necessary conditions. The structure of the two is not the same.

Summary. Dear dear, it's a pleasure to answer your <>

In addition to direct reasoning, there are several methods of reasoning for direct propositions: Counterproof: assuming that the conclusion to be deduced is false, it creates a contradiction, that is, to deduce a conclusion that contradicts the known facts, and thus to deduce the conclusion to be proved.

For example: "You can't succeed without genius." And Zhang San succeeded, so he must be a genius.

Contradictory method: Deriving contradictory propositions by derivation, so as to deduce the conclusions to be proved. For example:

If all people lie, then what they say is true, but this contradicts the original assumption, so not all of them lie. ”

What + are some other methods of direct reasoning about straightforward propositions? Let's give an example to illustrate in detail. (50 minutes) dear, I am very honored to answer your <>

In addition to direct reasoning, there are several methods of reasoning for direct propositions: Counterproof: assuming that the conclusion to be deduced is false, it creates a contradiction, that is, to deduce a conclusion that contradicts the known facts, and thus to deduce the conclusion to be proved.

For example: "You can't succeed without genius." And Zhang San succeeded, so he Wu Ku must be a genius.

Contradictory Method: Deriving contradictory propositions by deduction, so as to deduce the conclusions that Hui Sun wants to prove. For example:

If all people are lying, then what they say is true, but this contradicts the original assumption, so not everyone lies. ”

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Comparison of Contrast: By comparing the similarities and differences between things, the conclusion to be deduced. For example:

The weight of the two items A and B is the same, and if a part of the weighted item is still heavier than B, then the weight of the remaining item must be heavier than B. To sum up, the reasoning methods of the straightforward proposition of the trembling file also include the method of counterproof, the method of contradiction and the method of comparison. For different problems, different reasoning methods can better solve the problem and derive the correct answer.

Summary. A: Yes, syllogism is an important way of thinking in college study, it is a way to break down a problem into three parts so that it can be better understood and solved.

The structure of a syllogism is: the first paragraph, which asks questions; the second paragraph, the analysis of the problem; In the third paragraph, a solution is proposed. The advantage of a syllogism is that it helps us understand the problem better, analyze the problem better, and come up with solutions better.

Therefore, syllogisms are an important way of thinking in college studies that can help us better understand and solve problems.

A: Yes, syllogism is an important way of thinking in college study, it is a way to break down a problem into three parts so that it can be better understood and solved. The structure of the syllogism is:

In the first paragraph, ask questions; the second paragraph, the analysis of the problem; In the third paragraph, a solution is proposed. The advantage of the three-pronged theory is that it can help us better understand the problem, analyze the problem better, and better propose solutions early. Therefore, syllogism is an important way of thinking in college study, and it can help us understand and solve problems better.

Can you add, I don't quite understand it.

A syllogism is a university study, and it is a method of argumentation that is used to prove an argument or opinion. Its basic structure is: the first paragraph, which presents an argument; In the second paragraph, the arguments are presented; The third paragraph, the general conclusion.

When using a syllogism, there are a few things to be aware of: first, make sure that the argument is clear and not vague; Second, the argument should be strong and able to prove the argument; Finally, the summary should be concise and not lengthy. The solution to these problems is:

First of all, when presenting an argument, it is necessary to express the argument clearly; Second, when presenting arguments, it is necessary to prove the arguments and make the arguments clear; Finally, when concluding, make your argument clear and don't drag it out. Personal tip: When using syllogisms, you should pay attention to the clarity of the argument, the strength of the argument, and the conciseness of the summary, so that you can better prove your point.