Find the differential of y = = sec 4x + csc24r %3D O dz (8sec 4xtan4x- 8csc 4xcot4r)dy %3D O dy = (8sec4xtan4x + 8csc²4xcot4r)dr %3D O dz (8sec 4xtan4x + 8csc24rcot4r)dy O dy = (8sec 4xtan4r - 8csc 4rcot4x)dr

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