Consider the following. (Round your answers to four decimal places.)
f(x,y)=xcos(y)
(a) Find f(1,3) and f(1.1,3.05) and calculate Delta z.
f(1,3)=
f(1.1,3.05)=
Delta z=
(b) Use the total differential dz to approximate Delta z.
dz=
dz AZ 1.13.05 L f1,3 b Use the total differential dz to approximate z aFind f(13and f(113.05and calculate z f(xxcos Consider the following.(Round your answers to four decimal places.)