SAT官方每日一题附答案和解析[数学](2020年2月7日)
日期:2020-02-07 10:00
(单词翻译:单击)
每日一题
Mathematics>Standard Multiple Choice
Read the following SAT test question and then click on a button to select your answer.
(9+7i^18)/4-i
The complex expression above is equivalent to the expression a+bi for the rational constants a and b. What is the value of b?
(Note:i=√-1)
(A) b=2/15
(B) b=2/17
(C) b=8/17
(D) b=16/17
答案和解析
答案:B
解析:
Choice B is correct.