public Expression InvertOn(Expression other)
{
//When right is 2, the invert is sqrt. x^2 -> sqrt[other], -sqrt[other]
if (Right.CompareTo(Constant.Two))
{
var args = new List();
args.Items.Add(other);
var answer1 = SysFunc.MakeFunction(args, new Scope(), "sqrt");
var answer2 = new Minus();
answer2.Child = answer1;
var answers = new List();
answers.Items.Add(answer1);
answers.Items.Add(answer2);
return(answers);
}
//Couln't InvertOn.
return(null);
}