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Expression 2: Start sum from "k" equals 1 to "n" , end sum, StartFraction, "x" Superscript, "k" , Baseline "k" ! Over "k" Superscript, "k" , Baseline , EndFraction
n
∑
k
=
1
x
k
k
!
k
k
2
Expression 3: "n" equals 1
n
=
1
1
1
150
1
5
0
3
4
powered by
powered by
"x"
x
"y"
y
"a" squared
a
2
"a" Superscript, "b" , Baseline
a
b
7
7
8
8
9
9
over
÷
functions
(
(
)
)
less than
<
greater than
>
4
4
5
5
6
6
times
×
| "a" |
|
a
|
,
,
less than or equal to
≤
greater than or equal to
≥
1
1
2
2
3
3
negative
−
A B C
StartRoot, , EndRoot
pi
π
0
0
.
.
equals
=
positive
+
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