Learning Target L4: I can represent a logical argument as a conditional statement. I can determine if an argument is valid or a fallacy. I can use rules of inference to discuss the validity of an argument. I can identify and discuss common fallacies. Determine whether the argument is valid. Explain your answer by writing the argument in the form and stating whether this is valid (why?) or invalid (why): premise 1 premise 2 conclusion I 1. If you sit on the downstairs couch, my cat Pepper will sit on your lap. Pepper is sitting on your lap. Therefore you are sitting on the downstairs couch. 2. All birds have feathers and wings. A cassowary is a bird. Penguins are also birds. Cats are not birds. Therefore cassowaries have feathers and wings.

Translate the following argument into symbolic form. Then determine whether the argument is valid or invalid. If the band plays rock music, then they have a guitarist. They do not have a guitarist. Therefore, the band does not play rock music. Write the statement in symbolic form.

Fill in the blanks to complete the sentence below. An argument consists of one or more and a conclusions fallacies premises conjunctions

Given the argument: "If it is hot or humid, then I complain. I am not complaining. __________________ Therefore, it is neither hot nor humid." Translate the argument into symbolic form. Build a truth table for the above argument. Is this argument valid or invalid? Based on your truth table, explain why the argument is valid or invalid.