16x^2+12x-10
6x(y-2)
3
4x
−11x−3 by
2
x
−
2x−3
cos(2x+3y)−xsin(2x+3y)(2+3
dx
dy
)=
sinx+ycosx
-3(y+2)
9.86(-x)(3.8-x)=(1+2x)^2
7(5b-2)+9
