Question

Find number of possible solution of equation 1/x+1/y

Answer 1

★ THEORY OF NUMBERS ★

Given system :

1/x + 1/y

x + y / xy

For the existence of function :

The following cases should be considered :

x + y < 0

x + y > 0

x + y = 0

And

xy < 0

xy > 0

xy ≠ 0 Respectively

And the combination of the following above cases may result up in the expression to be available in existence

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