Mathematics, 22.06.2019 13:00 didirose
I’ll mark brainest! find all the real cube roots of -0.000125
Answers: 1
. This is almost correct except the fraction is out by some number of factors of 10 (because the 125 part is correct but the number of 0s isn't).
and now the cube root becomes easy to compute:![\sqrt[3]{-0.000125} = \sqrt[3]{\frac{-1}{8000}} = \frac{\sqrt[3]{-1}}{\sqrt[3]{8000}} = \frac{-1}{20} = -0.05](/tpl/images/0004/1623/76ec1.png)
.![y=\sqrt[3]{x}](/tpl/images/0004/1623/319c6.png)
is described as bijective. This means for all x, there is only one y corresponding to it. (And also for all y there is only one x corresponding to that). This means there can only ever be one cube root of any real number.
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I’ll mark brainest! find all the real cube roots of -0.000125...
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