，(i为虚数单位)则复数
的实部为 .相关试题
A class collects ＄50 to buy flowers for a classmate who is in the hospital. Roses cost ＄3 each， and carnations cost ＄2 each. No other flowers are to be used. How many different bouquets could be purchased for exactly ＄50？_______
1，F（x）为偶函数，则G（x）＝F（x）·log
（x＋
）是_______函数（填“奇”或“偶”），它的图像关于______对称。
＋（a－1）x＋a在区间
上是增函数，则a的取值范围是______
. What is （x－y）推荐套卷
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