there is , is continues in
point. i need to prove that
by epsilon delta definition.
i need to follow only my books prove.help me understand it.
the books proof:
in order to prove
we will use the definition that for
surrounding we have surrounding for which every
is continues in point. so
and for surrounding we have
surrounding for which every
it is given that then for
cant understand this last step why
is the resolt of the last two steps??