do fast plzz math walo
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Answer:
The right answer is 0. See in the picture.
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Answer:
f(x) + f(1/x) = 0
Step-by-step explanation:
Given f(x) = x² - 1/x²
To find f(1/x), we replace x by 1/x in f(x)
So f(1/x) = (1/x)² - 1/(1/x)²
= 1/x² - x²
Then f(x) + f(1/x)
= x² - 1/x² + 1/x² - x²
= 0
Note:
In this type of problem, x must be non-zero because when x becomes 0 (zero), both f(x) and f(1/x) do not exist.
Homeworks for you:
1. Find f(1/x) when f(x) = ax + b
2. Find f(x) - f(1/x) when f(x) = x³ - 1/x³
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