Sum(, prod, Sums and products of numeric sequences – Texas Instruments TI-83 PLUS User Manual
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313
sum(, prod(
sum(
(summation) returns the sum of the elements in
list
.
start
and
end
are
optional; they specify a range of elements.
list
elements can be real or
complex numbers.
prod(
returns the product of all elements of
list
.
start
and
end
elements are
optional; they specify a range of list elements.
list
elements can be real
or complex numbers.
sum(
list
[
,
start
,
end
]
)
prod(
list
[
,
start
,
end
]
)
Sums and Products of Numeric Sequences
You can combine
sum(
or
prod(
with
seq(
to obtain:
upper
upper
G
expression(x)
∏
expression(x)
x=lower
x=lower
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