The Index Laws (VCE SSCE Mathematical Methods): Flashcards

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The Index Laws
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Base in ana^n

aa

Index in ana^n

nn

am×an=a^m \times a^n =

am+na^{m+n}

am÷an=a^m \div a^n =

amna^{m-n}

a0=a^0 =

11 (for non-zero aa)

an=a^{-n} =

1an\frac{1}{a^n}

(am)n=(a^m)^n =

amna^{mn}

(ab)n=(ab)^n =

anbna^n b^n

(ab)n=\left(\frac{a}{b}\right)^n =

anbn\frac{a^n}{b^n}

Sign of (a)n(-a)^n when nn even

Positive

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