Which set of points lie on the given graph?
2 answers:
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Recall the Pythagorean identity:
Divide through by
and you get
On the left hand side of your equation, use this expansion for
:
and simplify using the fact that
. You end up with
so this is an identity and holds for all
in an appropriate domain.
Divide through by
On the left hand side of your equation, use this expansion for
and simplify using the fact that
so this is an identity and holds for all
