Question
a.
A formal proof relies on the understanding of the reader to accept its correctness, while a rigorous proof is entirely justified by the rules of the mathematical language.
b.
A formal proof is represented within a mathematical language, while a rigorous proof occurs within a natural language.
c.
A formal proof contains full details of the argument, while a rigorous proof leaves out some details while still maintaining acceptance.
d.
A formal proof is commonly used for verification, while a rigorous proof is used for validation.
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