51 and 52 Find dy/de and d2y/dz2. For which values of t is the parametric curve concave upward? 51. t312t, y= t2 -1 Answer 52. =cos 2t, y = cost, 0

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A: This is the application of derivatives.

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A: Please refer the attached image for complete solution.

Q: 51 and 52 Find dy/da and d2y/dx. For which values of t is the parametric curve concave upward? 51.…

A: Given,

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