,
find 
and interpret these numbers as slopes. Illustrate with sketches.
Solution:
The curve in the plane x = 1 intersects the parabola
,
and the slope of the tangent line at the point ( 1, 2, 8 ) is
.
The curve in the plane y = 2 intersects the parabola
,
and the slope of the tangent line at the point ( 1, 2, 8 ) is
.
by: nl