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(a) Show that for y=cosh1(cothx2). dxdy=2xcosechx2 [4 marks] (b) For y=(sinh12x)2, show that (4x2+1)(dxdy)216y=0 [3 maxks] Find dxdy of the following function when x=eysin1x+sinh4y [5

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(a) Show that for y=cosh1(cothx2). dxdy=2xcosechx2 [4 marks] (b) For y=(sinh12x)2, show that (4x2+1)(dxdy)216y=0 [3 maxks] Find dxdy of the following function when x=eysin1x+sinh4y [5 marks]

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