Mathematics, 16.06.2021 16:20 luhmama

Cho hàm số f(x, y) = x^2-2y^2+2x có đồ thị là mặt cong S. Tìm điểm M trên mặt S sao cho tiếp diện của mặt S tại M vuông góc với trục Oz.

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Cho hàm số f(x, y) = x^2-2y^2+2x có đồ thị là mặt cong S. Tìm điểm M trên mặt S sao cho tiếp diện c...

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