Math
posted by Michelle .
Determine the points at which the function is discontinuous and state the domain using interval notation
f(u)=(4u^2)/(7u+7πu^2uπ)
Please help.

It is discontinuous where the denominator is zero, because division by zero is undefined.
so, where is
7u+7πu^2uπ
= 7(u+π)u(u+π)
= (7u)(u+π)
zero?
So the domain is all reals except those values.
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