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Mathematics
Problem
For the curve
x
2
+
y
2
=
25
x^{2}+y^{2}=25
x
2
+
y
2
=
25
, determine the concavity of the curve with respect to
x
x
x
at the point
(
3
,
4
)
(3,4)
(
3
,
4
)
. a) Point of inflexion at
(
3
,
4
)
(3,4)
(
3
,
4
)
b) Second derivative not defined at
(
3
,
4
)
(3,4)
(
3
,
4
)
c) Concave downward at
(
3
,
4
)
(3,4)
(
3
,
4
)
d) Concave upward at
(
3
,
4
)
(3,4)
(
3
,
4
)
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