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spookymod4845
29.10.2019 •
Mathematics
True or false. for a continuous function, of f(2) is negative and f(3) is positive, then there must be a zero between x=2 and x=3
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Ответ:
It's true. In general, if a function is continuous, and you have
then
spans all the possible values between
and
in the interval ![[x_1,x_2]](/tpl/images/0351/6138/bf2b7.png)
So, in particular, if you have
you can conclude that in the interval
,
span all the values between
and
, which include 0 because
is negative and
is negative.
Ответ: