//sin[x] -> asin[other]
public Expression InvertOn(Expression other)
{
var arg = new List();
arg.Items.Add(other);
return(SysFunc.MakeFunction(arg, CurScope, "asin"));
}
private Equal InvertFunction(Call call, Expression right)
{
SysFunc func = call.Child.Value as SysFunc;
if (call.ContainsVariable(@var))
{
return(new Equal(call.Arguments[0], (func as IInvertable).InvertOn(right)));
}
return(null);
}