Multiplication of Square Roots
Care must be used in multiplying square roots of negative numbers. For example, the following reasoning is incorrect:
The fallacy is that the rule, where the principal value of the square root is taken in each instance, is generally valid only if at least one of the two numbers x or y is positive, which is not the case here.
Read more about this topic: Imaginary Number
Famous quotes containing the words multiplication of, square and/or roots:
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—Mark Twain [Samuel Langhorne Clemens] (1835–1910)
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That last house!
How it sat like a square box!”
—Anne Sexton (1928–1974)
“A poet must be a psychologist, but a secret one: he should know and feel the roots of phenomena but present only the phenomena themselves—in full bloom or as they fade away.”
—Ivan Sergeevich Turgenev (1818–1883)