Reflecting the graph of y=cosx across the y axis is the same as not reflecting it at all.
2 answers:
Answer:
True
Step-by-step explanation:
The graph of is an even function.
This means that the graph of is symmetric about the y-axis.
If we reflect the graph of about the y-axis, it will fall exactly on its outline.
This makes it behave as if it has not been reflected at all.
In other words, the mapping for reflection about the y-axis is
Since
The graph will retrace its outline.
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