Q. 12 C4.2( 11 Votes )

# Let us write the value of f(x) + f(–x) when f(x) = 2x + 5.

Answer :

We have f(x) = 2x + 5

So, f(-x) = 2(-x) + 5

Now, f(x) + f(–x) = 2x + 5 + 2(-x) + 5

f(x) + f(–x) = 2x + 5 - 2x + 5

f(x) + f(–x) = 10.

⸫ value of f(x) + f(–x) when f(x) = 2x + 5 is 10.

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