Formula to calculate the sum of angles for an n-sided
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A function f is an even function, if for all x we have f(x)=f(-x).
All the functions in the problem are constant functions, because no x is involved.
For example, consider the first function:
,
is just a constant value.( it is actually equal to 0)
Thus for any x, f(x) = 0 and f(-x) =0
This can be said for all constant functions: all of them are even functions.
Answer: all
All the functions in the problem are constant functions, because no x is involved.
For example, consider the first function:
Thus for any x, f(x) = 0 and f(-x) =0
This can be said for all constant functions: all of them are even functions.
Answer: all