Negative Exponents

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iceking
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Negative Exponents

Postby iceking » Thu Feb 04, 2010 4:25 pm

Ok, maybe I misread my book, but this is from my book:

For any number "a" (except zero), a0 = 1.


Now I have a homework problem:
Simplify the expression: mn0


So, I put in for my answer 1, but when it was graded the teacher said that that was the wrong answer. How could it be wrong if any number the the power if zero is 1? Did I misread my book, or did the teacher's answer key make a mistake? :confused:

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stapel_eliz
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Postby stapel_eliz » Fri Feb 05, 2010 12:08 am

If the expression was , then you have . How does that simplify?

If the expression was , then you would get the answer you gave. :wink:

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iceking
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Re: Negative Exponents

Postby iceking » Fri Feb 05, 2010 2:45 pm

stapel_eliz wrote:If the expression was , then you have . How does that simplify?



That was the expression, would that simplify to ?

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stapel_eliz
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Postby stapel_eliz » Fri Feb 05, 2010 5:46 pm

That is the value of , yes? :wink:


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