4+12+20+28+36+44+52+60等于多少有没有公式

4+12+20+28+36+44+52+60等于多少有没有公式 请问4+12+20+28+36+44+……+196等于多少?用初中方法计算! 2+4+8+10+12+14+16+18+20+22+24+26+28+30+32+34+36+38+40+42+44+46+48+50+52+54+56+58+60+62+64好多 数列题：8 12 20 28 44 52 68 76?问号处应该是几?. 8 ,12 ,20 ,28 ,44 ,A:48 B:52 C:56 D:60 我的matlab程序似乎有些问题程序如下：clc;x=[10 52 -1 7 20 8 20 12 5 12 13 -4 -4 -5 0 5 0 2 7 10 18 19 22 11 26 28 30 34 36 27 36 38 44 40 46 42 51 55 45 58 64 70 62 60 56 50 62 60 65 1 4 2 -2 40 48 50 49 53 54];y=[0 13 28 22 27 19 12 11 平面上有16个点,你能连成多少条线段,请写出算式1,4,3,12,5,20,7,28,(),36,11,44 2+4+6+8+10+12+14+16+18+20+22+24+26+28+30+32+34+36+38+40+42+44+46+48+450+52+54+56+58+60+62+64+6666+68+70+72+74+76+78+80+82+84+86+88+90+92+94+96+98+100 将连续偶数2.4.6.8……排列如图所示表—— 2 4 6 !8 !10 12 14 16 !--!--!--!18 20!22!24!26!28 30 32 !--!--!--!34 36 38 !40!42 44 46 48 ——50 52 54 56 58 60 62 64…………（1）十字框中5个数的和与中间 与6互质的最小合数是,4,6,8,9,10,12,14,15,16,18,20,21,22,24,25,26,27,28,29,30,32,33,34,35,36,38,40,42,44,45,46,48,49,50,51,52,54,55,56,58,60```好象不权 求matlab高手,作空间曲面图.x = [30 30 30 30 30 31 31 31 31 31 34 34 34 34 36 36 36 36 40 40 40 40 40 40 40 40 45 45 45 45 52 52 52 52 52 53 53 53 53 53 ];y = [8 13 20 27 34 8 13 20 27 34 4 11 18 25 5 11 25 33 2 16 37 44 9 16 23 30 5 12 19 26 16×25用简便方法计算等于多少啊!急用!还有一道题：找规律填数.36 7 28 5 20 16 9 28 7 20 5 12 4 52 简单的百分数计算:::::::::41/53 =12/53 =15/72 =20/72 =10/72 =27/72 =44/56 =6/56 =37/52 =14/52 =1/52 =42/58 =11/58 =5/58 =10/57 =4/57 =43/57 =13/52 =21/52 =18/52 =40/52 =8/52 =4/52 =8/58 =6/58 =44/58 =4/50 =28/50 =18/50 = 在长方形中画一个最大的半圆,已知半圆面积是31.4平方厘米,求长方形面积.1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1617 18 19 20 21 22 23 24 2526 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 数字排列组合1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 这些数字用11个组一组.能排多少组 用matlab拟合下面一组数据的曲线x=[1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 7 下面有一个题目和要求,请帮忙用C语言编写一下,The following is a student’s home work STANDARD solution.2 A 4 D 6 D 8 C 10 A 12 D 14 C 16B 18 A 20 C 22 C 24A 26 A 28 B 30 D 32 A 34 B 36C 38C 40B42D 44 D 46 A 48C 50 A 52D 54A 56D 58 android编程 数组：static final int g[][]=new int[][]{{3,16,29,42},{4,17,30,43},{5,18,31,44},{6,19,32,45},{7,20,33,46},{8,21,34,47},{9,22,35,48},{10,23,36,49},{11,24,37,50},{12,25,38,51},{13,26,39,52},{14,27,40,53},{15,28,41,54},};int a = new Ran