isahbellas
26.06.2019 •
Mathematics
If f(x) is an even function and f(3)=5 then what is the value of 4f(3)+2f(-3)?
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Ответ:
Step-by-step explanation:
We have been given that f(x) is an even function and f(3)=5. We are asked to find the value of 4f(3)+2f(-3).
Since we know that graph of an even function is symmetric with respect to y-axis. By the definition of an even function, a function f is even if and only if f(-x)=f(x) for all x in the domain of f.
Since we have been given that f(x) is an even function, so f(3)=f(-3).
Upon substituting our given values we will get,
Therefore, the value of
will be 30.
Ответ:
Need a picture to help you on this one. :)