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等比級数
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Expression 3: StartFraction, "a" Over 1 minus "x" , EndFraction
a
1
−
x
3
Expression 4: "a" equals 3
a
=
3
negative 10
−
1
0
10
1
0
4
Expression 5: "n" equals 10
n
=
1
0
negative 30
−
3
0
30
3
0
5
6
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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