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Example Questions
Example Question #7 :Apply Intermediate Value Theorem
Can Intermediate Value Theorem be applied to the functionwithin the interval?
Yes, because the functionhas a root at
No, because
No, because the function is not continuous
Yes, because the function crosses theaxis within the interval
No, because
The required conditions for Intermediate Value Theorem include the function must be continuous andcannot equal. While there is a root atfor this particular continuous function, this cannot be shown using Intermediate Value Theorem. The function does not cross theaxis, thus eliminating that particular answer choice. The correct answer is “No, because.” Since one of the conditions for Intermediate Value Theorem is thatcannot equal, by graphingwe can see that this requirement is not met.
Example Question #8 :Apply Intermediate Value Theorem
What can be concluded by using Intermediate Value Theorem for the functionon the interval?
There is a root for this polynomial located betweenand
The requirements for Intermediate Value Theorem are not met
There is a root for this polynomial at
There are two roots on this polynomial located betweenand
There is a root for this polynomial located betweenand
his function is continuous (as it is a polynomial) and; therefore, the required conditions for Intermediate Value Theorem are met. While there is a root at这个函数(通过图形可以看出polynomial), Intermediate Value Theorem does not state where this root will be exactly, nor does it state how many roots there might be. Thus, the conclusion that can be made by IVT is that there is a root for this polynomial located somewhere betweenand.
Example Question #9 :Apply Intermediate Value Theorem
Let. Is there a numberbetweenandsuch that?
Yes, as shown by Intermediate Value Theorem
No, Intermediate Value Theorem cannot determine the exact value of
Yes, as shown by the Fundamental Theorem of Calculus
No, no number c such thatexists
Yes, as shown by Intermediate Value Theorem
First, determine the values of the function at the bounds. This will allow the correct implementation of the Intermediate Value Theorem.
Because the problem asks to analyze the intervaland, there must be a value, with. Because, by Intermediate Value Theorem there should be a numberbetweenandthat satisfies the required conditions. Therefore, “Yes, as shown by Intermediate Value Theorem” is the correct answer.
Example Question #10 :Apply Intermediate Value Theorem
Assumeis continuous on the intervaland has the values listed in the table below. Which of the following values ofguarantees thathas at least two roots?
If, only one root can be guaranteed (at).
If, then Intermediate Value Theorem can be applied twice, forand.
This is true because for continuous functions, Intermediate Value Theorem states that a change in sign (ex: from positive to negative) of the function within an interval suggests a root (where the function crosses theaxis) at some point within that interval.
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