190 Chapter 6 Let’s Learn About Partial Dierentiation!
If we draw a graph of
the two-variable function
z = f(x, y) = 3x + 2y + 1
in the 3-dimensional
crdinate system, what
does it lk like, Kakeru?
Now, if we make
the plane
OACB
with this straw
mat...
Teacher, there
were sti
some potatoes
in there. What
should we do?
Mr. Kinjiro Bunda.
He was a very
gd teacher.
Now, Noriko,
let’sbegin our
last leon.
Okay!
If you can solve the
problem, let’s steam and
eat them. Ho, ho, ho.
Partial Dierentiation 191
Oh, there’s the
first period be!
Let’s exp ...
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