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# Algebra

Posted on 2011-04-29
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On the last line it looks like z^0 becomes point one (.1). I thought it should just be (1). Is this correct? Is the book fudging the truth a little in an attempt to communicate this (1) must be multiplied? Thanks.
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Accepted Solution

I have seen . used as multiplication rather than * (notation varies according to locale). That .1 is a *1, so the 1 can be removed from the final result.

>> z^0 becomes point one (.1).

y^(-4)z^0 becomes  y^(-4)*(1) = y^(-4) = 1/y^4
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Author Closing Comment

Thanks.
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