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What Does ∑ Mean In Math? [Solved]
summation The symbol ∑ indicates summation and is used as a shorthand notation for the sum of terms that follow a pattern. For example, the sum of the first 4 squared integers, 12+22+32+42, follows a simple pattern: each term is of the form i2, and we add up values from i=1 to i=4.
Math Antics - Mean, Median and Mode
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How to Find the Mean | Math with Mr. J
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Introduction to i and imaginary numbers | Imaginary and complex numbers | Precalculus | Khan Academy
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