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Is tables always the best way of finding the value of a variable?

false


What is the difference between predicate and propositional logic?

in propositional logic a complete sentence can be presented as an atomic proposition. and complex sentences can be created using AND, OR, and other operators.....these propositions has only true of false values and we can use truth tables to define them... like book is on the table....this is a single proposition... in predicate logic there are objects, properties, functions (relations) are involved.


Why do scientists use graphs and data tables?

Scientists use graphs and data tables to organize and derive information from the data. It starts with the data table. The table organizes all the information that the scientist has collected into one place that can be easily moved around, added to and deleted from. A graph can then be created using the data from the table. The graph is just a visual representation of the numbers in the table. It is often much easier to find patterns, cause and effect or whatever answers the question that the scientists isattempting to answer. Although data tables themselves can hold any and all information, it is usually best to minimize the number of comparisons in a graph. Otherwise your graph can be more confusing than the raw data.


True or false The independent variable is the variable that is changed in an experiment?

false


How do you construct a truth table for parenthesis not p q parenthesis if and only if p?

Assuming that you mean not (p or q) if and only if P ~(PVQ)--> P so now construct a truth table, (just place it vertical since i cannot place it vertical through here.) P True True False False Q True False True False (PVQ) True True True False ~(PVQ) False False False True ~(PVQ)-->P True True True False if it's ~(P^Q) -->P then it's, P True True False False Q True False True False (P^Q) True False False False ~(P^Q) False True True True ~(P^Q)-->P True True False False