Answer:
Let P(h, k) be the required
point on
?.
(1)
?.
(2)
Diff. (1) w.r.t.
x
m = slope
of tangent to (1)
(a) The tangent
to (1) are ||X-axis
m = 0
h = 0
k = ± 4
(b) k = ± 4
Required
points are (0, ±4).
(II) The tangents to
(1) are || Y-axis
is not
defined.
(b)h = ± 3
Required
points are (± , 0).
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