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"A Class Divided" is a 1985 episode of the PBS series Frontline. Directed by William Peters, the episode profiles the Iowa schoolteacher Jane Elliott and her class of third graders, who took part in a class exercise about discrimination and prejudice in 1970 and reunited in the present day to recall the experience.
In college mathematics exercises often depend on functions of a real variable or application of theorems. The standard exercises of calculus involve finding derivatives and integrals of specified functions. Usually instructors prepare students with worked examples: the exercise is stated, then a model answer is provided. Often several worked ...
Year Yet questions. If you want help or explanations as you go along, turn to the chapter in PART TWO that relates to the question you're working on. 2. Read Part One and Part Two as preparation for your workshop, perhaps making notes as you read. When you've finished, set aside three hours and write your answers to the questions in Part Three.
The rule states that P implies Q is logically equivalent to not-or and that either form can replace the other in logical proofs. In other words, if P {\displaystyle P} is true, then Q {\displaystyle Q} must also be true, while if Q {\displaystyle Q} is not true, then P {\displaystyle P} cannot be true either; additionally, when P {\displaystyle ...
A conditional sentence is a sentence in a natural language that expresses that one thing is contingent on another, e.g., "If it rains, the picnic will be cancelled." They are so called because the impact of the sentence’s main clause is conditional on a subordinate clause.
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Formal logic and mathematical rules are examples of rigorous consistency. An example would be: if all As are Bs and all Bs are Cs, then all As are Cs. While this standard is of high value, it is limited. For example, the premises are a priori (or self-apparent), requiring another test of truth to employ this criterion. Additionally, strict ...
A rule of inference that allows one to derive a conclusion from a conditional statement and its antecedent, formalized as if and , then . modus tollens A rule of inference that allows one to derive a conclusion from a conditional statement and the negation of its consequent, formalized as if P → Q {\displaystyle P\rightarrow Q} and ¬ Q ...