# Product notation

I have a quick question. In my book, there is a question that says to express each of the following products in terms of $$\prod_{n=1}^\k\a{i}$$, where $$k$$ is constant. Now, my question is this: $$\prod_{n=1}^\k\$$ka_i. Would i just pull the $$k$$ out becuase it is only a constant and move that to in front of the product? This almost looks like a property that is similar with summation, but I think I have to do more than simply move the $$k$$. Anyone understand/assist? Thank you all. I hope everyone can understand my LaTeX. The number atop the product is supposed to be k, NOT 1. Damn latex.

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