Exercício sobre álgebra elementar

Calcular: $\;10^{\large -1}\,$, $\;10^{\large -2}\,$, $\;10^{\large -5}\,$

resposta:

Resolução:

$\,10^{\large -1}\,=\,\dfrac{1}{10^{\large 1}}\,=\,\dfrac{1}{10}\,=\,0,1\,$

$\,10^{\large -2}\,=\,\dfrac{1}{10^{\large 2}}\,=\,\dfrac{1}{10\centerdot 10}\,=\,\dfrac{1}{100}\,=\,0,01\,$

$\,10^{\large -5}\,=\,\dfrac{1}{10^{\large 5}}\,=\,\dfrac{1}{10\centerdot 10\centerdot 10\centerdot 10\centerdot 10}\,=\,\dfrac{1}{100\,000}\,=\,0,00001\,$

Resposta:

$\;10^{\large -1}\,=\,0,1\; ; \;10^{\large -2}\,=\,0,01\; ; \; 10^{\large -5}\,=\,0,00001\;$
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