x=a(θ-sinθ) y=a(1-cosθ)x=a(θ-sinθ),y=a(1-cosθ).求d^2y/dx^2.dy/dx=cotθ/2,d^2y/dx^2=d/dx*dy/dx=d(dy/dx)/dθ*dθ/dx=d(dy/dx)/dθ*1/dx/dθ= 我想问哈d^2y/dx^2那后面d(dy/dx)/dθ*dθ/dx=d(dy/dx)/dθ*1/dx/dθz这两步是如何化解的.
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x=a(θ-sinθ) y=a(1-cosθ)x=a(θ-sinθ),y=a(1-cosθ).求d^2y/dx^2.dy/dx=cotθ/2,d^2y/dx^2=d/dx*dy/dx=d(dy/dx)/dθ*dθ/dx=d(dy/dx)/dθ*1/dx/dθ= 我想问哈d^2y/dx^2那后面d(dy/dx)/dθ*dθ/dx=d(dy/dx)/dθ*1/dx/dθz这两步是如何化解的.
x=a(θ-sinθ) y=a(1-cosθ)
x=a(θ-sinθ),y=a(1-cosθ).求d^2y/dx^2.dy/dx=cotθ/2,d^2y/dx^2=d/dx*dy/dx=d(dy/dx)/dθ*dθ/dx=d(dy/dx)/dθ*1/dx/dθ= 我想问哈d^2y/dx^2那后面d(dy/dx)/dθ*dθ/dx=d(dy/dx)/dθ*1/dx/dθz这两步是如何化解的.化解的目的在哪里,这样化解是为了得到什么.
x=a(θ-sinθ) y=a(1-cosθ)x=a(θ-sinθ),y=a(1-cosθ).求d^2y/dx^2.dy/dx=cotθ/2,d^2y/dx^2=d/dx*dy/dx=d(dy/dx)/dθ*dθ/dx=d(dy/dx)/dθ*1/dx/dθ= 我想问哈d^2y/dx^2那后面d(dy/dx)/dθ*dθ/dx=d(dy/dx)/dθ*1/dx/dθz这两步是如何化解的.
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