4.58×6.5与45.8×0.65的积相等.______.(判断对错) 发布时间:2017-04-29 20:57 │ 来源:www.tikuol.com 题型:解答题 问题: 4.58×6.5与45.8×0.65的积相等.______.(判断对错)
题型:解答题 设数列{an}中,若an+1=an+an+2(n∈N*),则称数列{an}为“凸数列”,已知数列{bn}为“凸数列”,且b1=1,b2=-2,则数列{bn}的前2014项和为________. 查看答案
题型:解答题 For years, it was viewed as a serious problem, ________ that has never been really solved.A.oneB.whereC.itD.which 查看答案