each number has magnitude n with rotating +- sign. therefore B.Hey,
So I did this by subbing in values (rlly not efficient and time consuming). Can someone show me how they would actually solve this? Thanks
View attachment 29466
The answer is (B)
Ah yes, how did i over see that.each number has magnitude n with rotating +- sign. therefore B.
Thank you! I was waiting for your replyNote that there are several ways the answer could have been written, including:
I could make the MCQ harder by making (C) , which gives the sequence and (D) be a correct answer and see how many students don't notice that the alternating signs start from the wrong sign and go for (C).
- if you started at
You were?Thank you! I was waiting for your reply
Well, you always give great answers.You were?
Thank youWell, you always give great answers.