Find points on the curve (x^(2))/(9) +(y...

Find points on the curve `(x^(2))/(9) +(y^(2))/(16)` =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,pm4 ) (ii) pm 3, 0)`

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