`ann.math.polynomial.PolynomialD2`

PolynomialD2.java defines a degree 2 polynomial class. This class
extends PolynomialD1

NOTE: Polynomial terms are white-space delimited.

Examples: 1 + 2x - 3xx, 1 +2x -3xx, 1 -2x + 3xx are all ok.

### public PolynomialD2()

*Default constructor*
Postcondition: myA == 0.0 && myB == 0.0 && myC
== 0.0.

### public PolynomialD2(double aValue, double bValue, double
cValue)

*Construct from double*
Receive: double aValue, double bValue, double cValue.

Postcondition: myA == aValue && myB == bValue
&& myC == cValue.

### public PolynomialD2(String polyString)

*Construct from String*
Receive: String polyString.

Precondition: strPolyD1 is of the form "a + bx + cxx" or "a +
bX + cXX", where a and b are numeric values.

Postcondition: myA == a && myB == b && myC ==
c.

### public double getC()

*C-attribute accessor*
Return: myC.

### public void setC(double newC)

*C-attribute mutator*
Receive: double newC.

Postcondition: myC == newC.

### public String toString()

*String converter (output)*
Return: the String equivalent to me.

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