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Using the result dy/dx = 1 ÷ dx/dy

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In this video I demonstrate the use of the relationship dy/dx = 1 ÷ (dx/dy) through an example.

    \[{\rm{Given }}x = 3\tan (2y - 1).{\rm{ Show that }}\frac{{dy}}{{dx}} = \frac{3}{{2(9 + {x^2})}}\]