ABSTRACT
One of the most useful techniques in the one-dimensional differential calculus is the product rule
d
dx (fg) =
df
dx g + f
dg
dx .
We look at variations of this rule for functions from R into R2 and R2 into R.
One of the most useful techniques in the one-dimensional differential calculus is the product rule
d
dx (fg) =
df
dx g + f
dg
dx .
We look at variations of this rule for functions from R into R2 and R2 into R.