Lösung 1.3:6b

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When a power expression has a negative exponent, the expression's value decreases when the base increases. Thus

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Another way to see this is to rewrite the two powers as

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and because \displaystyle 0\textrm{.}5^{3} > 0\textrm{.}4^{3} (see exercise a), it follows that

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i.e. \displaystyle 0\textrm{.}4^{-3} > 0\textrm{.}5^{-3}\,.