This is a wrong question, the official has responded and can't answer it. If you encounter a very difficult problem in the exam, or a problem that you can't solve at all, please choose to skip it first, do the following things and come back after you finish. There is enough time. After continuing the correct thinking, you can only guess the teacher's thinking and then write a simple result.

Also, if the data is wrong, you can obviously identify it, so you can take that variable to calculate first, and then substitute the correct value and the wrong value at the end. In this way, the two results appear at the end, which is clear at a glance, instead of the previous evaluation, and the process is written twice.

As for rationality, don't worry. After all, it is in the examination room. The important thing is not to leave blank. The key is to have free time. Check whether you can find formulas and theorems to convince yourself at every step of the solution process. If you can convince yourself, so be it.

Finally, you can really be sure that the question is wrong. Please don't panic, report to the teacher in time, and then finish the exam carefully.