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Quadratic f(x,y)
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Expression 3: "f" Subscript, "x" "y" , Baseline equals 0
f
x
y
=
0
negative 1
−
1
1
1
3
Expression 4: "f" Subscript, "y" "y" , Baseline equals negative 2
f
y
y
=
−
2
negative 2
−
2
2
2
4
Expression 5: "D" equals "f" Subscript, "x" "x" , Baseline "f" Subscript, "y" "y" , Baseline negative left parenthesis, "f" Subscript, "x" "y" , Baseline , right parenthesis squared
D
=
f
x
x
f
y
y
−
f
x
y
2
equals
=
negative 4
−
4
5
6
powered by
powered by
"x"
x
"y"
y
"z"
z
"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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