Negative Indices

10 10 2014

I learnt a new way of considering negative indices yesterday. My way of explaining the negative power is to express it as one over the expression. When the negative is in the denominator I use fractions to show that the result is the positive power in the numerator.

In class yesterday a student interpreted the one over as meaning minus the power so look at their simple working in comparison to mine, and it avoids fractions too.

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