How can I explain each function is discontinous at given point.
f(x) x^2 - 1 / over x + 1
at x = -1
--------------------------------------------------------------------
________( x^2 -1 / over x +1, if x doesn't equal -1
F(x)= ___(
________( 6, if x = -1
It should be a big parenthesis but i couldn't draw it here, so i put three (