Computer Sciences > Gate 2023 > Verbal
f(x) and g(y) are function of x and y, respectively and f(x) = g(y) for all real values of x and y. Which one of the following options is necessary true?
A
f(x)=0 and g(y)=0
B
f(x) = g(y) = constant
C
f(x) + g(y) = f(x) - g(y)
D
f(x)≠constant and g(y)≠constant

Correct : b

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