Courses

– Get lifelong access to this course for only $4.95 (US).  – Estimated Learning Time = 9 hours – What is natural deduction, and why should I learn it? – In this course we will master yet another method of demonstrating the validity of arguments. Of all the methods of proof introduced on this website

– Get lifetime access to the entire course for only $4.95 (US)! – Estimated Learning Time = 6 hours – What is the indirect method, and why should I learn it? – If we only have two simple sentences to deal with, our truth-table will only be four lines deep. However, with each additional simple

Get lifelong access to this course for only $4.95 (US).  Estimated Learning Time = 6 hours In Level 2: Logical Properties & Logical Relations we learned to construct truth-tables and how to use these logical devices to determine the logical properties of individual statements and logical relationships between statements. And in Level 3: Using Argument

Get lifetime access to the entire course for only $4.95 (US)!  Estimated Learning Time = 7 hrs – The concept of validity is one of the most important concepts in logic. An argument is valid if and only if the truth of the premises is sufficient to guarantee the truth of the conclusion. For example,

– Get lifelong access to this course for only $4.95 (US).  Estimated Learning Time = 7 hours Truth-tables are powerful tools with a variety of applications in logical analysis. In the first part of this course you will learn to construct truth-tables for logical formulae. Next, you will learn to use these truth-tables to identify

– Symbolic logic provides powerful tools for analysing and evaluating the claims and arguments we come across in everyday life. But before we can use these tools, we must learn how to translate everyday language into the language of symbolic logic, and learn the “grammar” of symbolic logic. What will I learn from this course?