oh well since you own a Nobel prize in mathematics, let me reword that question: How can you be sure that function is defined at x<>5 and x<>7 ?Its just a question, excuse me for not being able to study every study there is.
Still, are you sure the function is continious just because you can different it at 2 points? I just had 1 year maths at uni but that doesnt seem right. It has been a while but cant you say: 1/x is discontinious at x=0?
if x=5 lies on the uper line and x=7 lies on the lower line is it correct to claim f(x) results in all values between 7 and -1 for 5<x<7?
Still, are you sure the function is continious just because you can different it at 2 points? I just had 1 year maths at uni but that doesnt seem right. It has been a while but cant you say: 1/x is discontinious at x=0?
if x=5 lies on the uper line and x=7 lies on the lower line is it correct to claim f(x) results in all values between 7 and -1 for 5<x<7?
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