1. If dy/dx = 2xy, then d²y/dx² = (a) 2y (b) 2x + 2y (c) 2x + 4y (d) 2x²y + 2y (e) 4x²y + 2y help me thanks ^^
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Originally Posted by tmd 1. If dy/dx = 2xy, then d²y/dx² = (a) 2y (b) 2x + 2y (c) 2x + 4y (d) 2x²y + 2y (e) 4x²y + 2y help me thanks ^^ It's e). dy/dx = 2xy d^2y/dx^2 = (d/dx)(2xy) = 2y + 2x(dy/dx) But dy/dx = 2xy d^2y/dx^2 = 2y + 2x(dy/dx) = 2y + 2x(2xy) = 2y + 4x^2y -Dan
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