Constant Multiplication

By Kardi Teknomo, PhD.

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How do I multiply a sum with a constant?

Because constant do not have index, you can put the constant out of the summation ‘sigma' symbol like the following

Example

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See Also: Kardi Teknomo's Tutorial

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Preferable reference for this tutorial is

Teknomo, Kardi. Summation Tutorial. http://people.revoledu.com/kardi/tutorial/basicmath/sum/