T=d f ld mf
V=x,y
R=-10,10,.5
F= ( ((( ( x-y) -( ((y) *2) -3)) )* 4))+sin(x)*cos(y)-cos(x)*sin(y)
C=( ((( ( x-y) -( ((y) *2) -3)) )* 4))+fp_sin(x)*fp_cos(y)-fp_cos(x)*fp_sin(y)
