Fract
Factor
Sys-Eq
Q-Eq
X
2
+
-
X
+
-
=
X1 =
X2 =
ABSTRACT
Quadratic Equation:
Ax
2
+Bx+C=0
has a general solution:
x
1
= -(B+SQRT((B)
2
- 4AC))/2A;
x
2
= -(B-SQRT((B)
2
- 4AC))/2A;
where both roots could be Real or Imaginary. If
A
=
0
quadratic equation itransorms to the linear.
Usage Tips
1). If Text box
A
is empty, system will automatically assign number 1 to
A
, so the Equation will become the equivalent of
x
2
+Bx+C=0
.
2). If Text box
B
is empty, system will assign 0 to
B
, so the Equation will become equivalent to
Ax
2
+C=0
.
3). If Text box
C
is empty, system will assign 0 to
C
, so the Equation will become equivalent to
Ax
2
+Bx = 0
.
4). Equation
Ax
2
-Bx+C=0
is equivalent to
Ax
2
+(-B)x+C=0
, so in order to solve this equation negative -B could be entered in a Text Box. The alternative way is to use DropDowns, which allow to select either "+" or "-" signs between the terms.