an=sinnπ/6,则a₁+a₂+a₃+······+a2010=
an=sinnπ/6,则a₁+a₂+a₃+······+a2010=
数学人气:888 ℃时间:2020-03-27 15:41:04
优质解答
第一种情况:因为an=sinnπ/6,a1=sinπ/6=0 a2=sin2π/6=0…… an=0 于是a1+a2+……+a2010=0第二种情况:an=sin(nπ/6) a1=i/2; a2=sin(2π/6)=(根号3)/2 ; a3=sin(3π/6)=1 a4=sin(4π/6)=(根号3)/2; a5=sin(5...错误,2010/12=167余6,于是a1+a2+……a2010=2+根号3哦,晓得,犯了个低级错误。谢谢提醒
我来回答
类似推荐
猜你喜欢
- 11000x(1+4.7%x80%)x(1+5.1%x2x80%)=多少怎么算 有么有简便算法
- 2关于过去完成时和时间能否连用的问题.
- 3do you know what the clotheswere made ( sorry,i don't know.是填of还是from,答案是from,为什么呢
- 4You must finish your homework on time ,must能和has to 替换吗
- 5_wool of which this is made comes from _Australian sheep.
- 6在英语里面可不可以 many food
- 7《可爱的考拉》短文
- 8我的理想画家作文400字快我很急!
- 9生物(动物细胞){把刮碎屑放在载玻片的生理盐水中涂抹均匀的目的是什么}
- 10下列各组线段中,能成比例的是( ) A.1cm,3cm,4cm,6cm B.30cm,12cm,0.8cm,0.2cm C.0.1cm,0.2cm,0.3cm,0.4cm D.15cm,16cm,40cm,6cm