如何修复小数无效操作?

How to fix decimal invalid operation?

decimal.getcontext().prec = 14
array = [decimal.Decimal('-0.24246792859937'), decimal.Decimal('-0.24246793714039')]  
f = lambda a: (a[0]**decimal.Decimal('1.05000000000000')) + (a[1]**decimal.Decimal('1.05000000000000'))  
print(f(array))

然后我会报错

    f = lambda a: (a[0]**decimal.Decimal('1.05000000000000')) + (a[1]**decimal.Decimal('1.05000000000000'))
decimal.InvalidOperation: [<class 'decimal.InvalidOperation'>]

如何解决这个问题?

问题是数字很复杂