If x and y are defined in terms of a third vatiable say t , then to find d(adsbygoogle = window.adsbygoogle || []).push({}); ^{2}y/dx^{2}, we cannot find d^{2}y/dt^{2}and d^{2}x/dt^{2}and divide them to get d^{2}y/dx^{2}, i am unable to fingure out the reason for this !!!!!!!

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# Second derivative from parametric form

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