9q - 4p - 7p + 10q
state that f(x,y)= x^3 y /(2x^6+y^2) approches zero as (x,y) as (0,0) along the line y= mx
p1(-1,-4) p2(2,3)
(D2+D-6)y=e2x
12=xcos90
inverse function
1 - x
2x / x - 1
1/x - 3
4 to the power of -2