Question

The equation of a curve is 2x4 + xy3 + y4 = 10.

(i) Show that
= − 83+3

32+43. [4]


(ii) Hence show that there are two points on the curve at which the tangent is parallel to the x-axis

and find the coordinates of these points. [4]​

Answer 1

Answer:

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Answer 2

Answer:

I can't understand this so once again