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Find points on the curve (x^2)/4+(y^2)/(...

Find points on the curve `(x^2)/4+(y^2)/(25)=1`at which the tangents are (i) parallel to x-axis (ii) parallel to y-axis.

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The correct Answer is:
(i) `(0, pm5)`
(ii) `(pm2, 0).`
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MODERN PUBLICATION-APPLICATIONS OF DERIVATIVES-EXERCISE 6 (c) (Long Answer Type Questions (I))
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