題目 Problem For the parametric curve x=x(t)x=x(t)x=x(t), y=y(t)y=y(t)y=y(t) when t=2t=2t=2, x(2)=4x(2)=4x(2)=4, x′(2)=2x'(2)=2x′(2)=2, x′′(2)=5x''(2)=5x′′(2)=5, y(2)=2y(2)=2y(2)=2, y′(2)=2y'(2)=2y′(2)=2, y′′(2)=1y''(2)=1y′′(2)=1, find d2ydx2 (x=4)=?\dfrac{d^2y}{dx^2}\,(x=4)=?dx2d2y(x=4)=? (20/100)(20/100)(20/100) 解答