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Mathematics
Mathematics
Problem
Explain why
d
x
d
t
\dfrac{dx}{dt}
d
t
d
x
must be non-zero when determining
d
y
d
x
\dfrac{dy}{dx}
d
x
d
y
for a parametric curve
x
=
f
(
t
)
,
y
=
g
(
t
)
x=f(t),\;y=g(t)
x
=
f
(
t
)
,
y
=
g
(
t
)
.
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