pg 711

In Exercises 5 - 8, evaluate fx(x,y) and fy(x,y) at the indicated point.

5.f(x,y) = (x^2)*y -x +2y + 3 at (1,2)

#hand work
knitr::include_graphics("https://raw.githubusercontent.com/maharjansudhan/DATA605/master/IMG_1636.jpg")