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Example Questions
Example Question #1 : Partial Sums Of Series
For the sequence
Determine .
is defined as the sum of the terms
from
to
Therefore, to get the solution we must add all the entries from from
to
as follows.
Example Question #1 : Partial Sums Of Series
Simplify the sum.
The answer is . Try this for
:
This can be proven more generally using a proof technique called mathematical induction, which you will most likely not learn in high school.
Example Question #3 : Partial Sums Of Series
In case you are not familiar with summation notation, note that:
Given the series above, what is the value of ?
Since the upper bound of the iterator is and the initial value is
, we need add one-half, the summand, six times.
This results in the following arithmetic.
Example Question #31 : Sequences And Series
In case you are not familiar with summation notation, note that:
What is the value of ?
Because the iterator starts at , we first have a
.
Now expanding the summation to show the step by step process involved in answering the question we get,
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