Find the first-order partial derivative fxf_xfx for the function f(x,y)=(x2+1)eyf(x,y) = (x^2 + 1)e^yf(x,y)=(x2+1)ey.
2xey2x e^y2xey
(x2+1)ey(x^2 + 1) e^y(x2+1)ey
2x+ey2x + e^y2x+ey
2xyey−12x y e^{y-1}2xyey−1