Mathematics, 20.09.2020 05:01 seth3336
If $a>0$ and $b>0,$ a new operation $\nabla$ is defined as follows:$$a \nabla b = \frac{a + b}{1 + ab}.$$For example,$$3 \nabla 6 = \frac{3 + 6}{1 + 3 \times 6} = \frac{9}{19}.$$Calculate $(1 \nabla 2) \nabla 3.$
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If $a>0$ and $b>0,$ a new operation $\nabla$ is defined as follows:$$a \nabla b = \frac{a + b}...
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