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zoeycrew
26.02.2020 •
Mathematics
Let f be a continuous function on the closed interval [ − 2 , 5 ]. If f((-2)=-7 and f(5)=1, then the Intermediate Value Theorem guarantees that
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Ответ:
The function has at least 1 zero within the interval [-2,5].
Step-by-step explanation:
The intermediate value theorem states that, for a function continuous in a certain interval
, then the function takes any value between
and
at some point within that interval.
This theorem has an important consequence:
If a function
is continuous in an interval [a,b], and the sign of the function changes at the extreme points of the interval:
Then the function f(x) has at least one zero within the interval [a,b].
We can apply the theorem to this case. In fact, here we have a function f(x) continuous within the interval
[-2,5]
And we also know that the function changes sign at the extreme points of the interval:
Therefore, the function has at least 1 zero within the interval [-2,5], so there is at least one point x' within this interval such that
Ответ:
The correct choice is shown selected.
Step-by-step explanation:
Since a radius needs to appear first on the list, it is worthwhile to identify those segments that are radii. A radius extends from the center (O) to a point on the circle. OG and OD are the only ones. The selected answer is the only one that has one of those listed first.
A chord is a line segment whose ends are points on the circle. There are 4 chords in the figure, one of which is also a diameter:
... DG, DH, FG, FH . . . . DG is also a diameter, since it includes the center point, O
There is one tangent: DE, an external line that intersects the circle at one point.