Tìm đạo hàm riêng cấp 1 cấp 2 của hàm số: z= X³ - 2Y⁴ + 2XY - Y +1

This question awards 100 ! i really don’t want to fail i will also mark you !

Of the ones listed here, the factor that had the greatest impact on the eventual destruction of native americans' ways of life was the development of the a) automobile. b) highway. c) railroad. d) steamboat.

100 points, hi, i’m not sure how to get the equation from the graph and table.