First, determine the values of
By inspection we find that
= 3, and
Now, rewrite the given function using the specified identity.
We now rewrite the given function using the specified identity. Using the values
= 3, and
= 2, we have
Next, use a graphing utility to graph both forms of the function.
We use a graphing utility to graph both forms of the function. We find that both functions have the same graph. It implies that the identity is true. See the accompanying graph.
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