Use these values and Matlab to find the sum of the 161st and 271st values of x

8 次查看（过去 30 天）
kanghao he
kanghao he 2016-12-6
回答： Surabhi KS 2021-6-10
x= [70, 10, 41, 65, 99, 55, 52, 26, 69, 27, 55, 98, 35, 59, 58, 89, 66, 31, 70, 51, 73, 80, 27, 97, 38, 71, 17, 88, 67, 23, 67, 38, 24, 98, 93, 23, 54, 46, 39, 24, 63, 85, 22, 88, 44, 70, 78, 11, 92, 49, 53, 65, 30, 70, 62, 58, 42, 70, 47, 10, 84, 15, 38, 98, 14, 31, 22, 58, 68, 52, 73, 32, 37, 85, 20, 72, 56, 89, 74, 48, 39, 27, 14, 59, 88, 67, 18, 31, 37, 56, 31, 22, 61, 60, 20, 65, 82, 33, 24, 50, 75, 88, 72, 13, 73, 83, 75, 30, 73, 49, 68, 12, 67, 72, 62, 56, 40, 70, 77, 67, 27, 99, 80, 78, 59, 90, 44, 42, 24, 59, 82, 90, 47, 55, 93, 21, 38, 69, 41, 11, 18, 10, 14, 76, 73, 66, 33, 13, 37, 10, 71, 54, 10, 51, 33, 60, 42, 68, 92, 56, 27, 74, 46, 65, 30, 40, 76, 58, 99, 18, 60, 18, 18, 64, 84, 82, 30, 17, 85, 58, 18, 56, 12, 18, 98, 35, 68, 40, 93, 61, 87, 21, 36, 33, 76, 56, 63, 53, 14, 63, 62, 64, 71, 71, 29, 56, 53, 49, 63, 38, 98, 72, 85, 10, 81, 83, 36, 50, 23, 29, 11, 10, 41, 37, 34, 18, 83, 88, 62, 88, 51, 24, 53, 22, 85, 72, 68, 39, 22, 32, 67, 20, 95, 53, 20, 76, 36, 46, 27, 50, 66, 28, 51, 98, 56, 76, 16, 40, 65, 68, 29, 16, 83, 72, 29, 69, 44, 88, 98, 57, 21, 66, 67, 16, 19, 78, 83, 46, 25, 10, 87, 82, 29, 39, 80, 76, 15, 86, 16, 70, 55, 35, 77, 38, 97, 96, 98, 42, 85, 96, 90, 96, 62, 57, 13, 71, 36, 86, 17, 51, 87, 95, 33, 17, 34, 14, 83, 39, 91, 90, 10, 46, 25, 78, 75, 23, 75, 73, 56, 60, 69, 46, 56, 32, 94, 59, 93, 30, 46, 11, 72, 34, 96, 96, 42, 30, 10, 25, 60, 91, 15, 61, 38, 31, 39, 13, 45, 14, 77, 92, 64, 47, 38, 21, 69, 32, 71, 63, 53, 18, 64, 25, 43, 61, 21, 75, 82, 22, 91, 43, 13, 97, 95, 41, 28, 34, 45, 64, 39, 23, 56, 94, 60, 84, 15, 30, 17, 77, 83, 61];

请先登录，再回答此问题。

回答（2 个）

KSSV
KSSV 2016-12-6
Home work...You have to do it on your own. Read about matrix/ vector indexing. If you have a amtrix A, you can access (i,j) element by A(i,j). If you have a vector X, you can acess any element using X(i), i = 1...n. Where n is length of vector.
Your problem is very easy and straight forward.
Surabhi KS
Surabhi KS 2021-6-10
This is basic MATLAB, the key is to understand how MATLAB works. In order to access say the element of an array X, you call it by X(n). This can be extended to accessing any element (i,j) of a matrix X, as X(i,j).
Now, wrt your problem we need X(161) + X(271), which is the exact syntax as well! It is very intutively written in terms of matrices. Since you have an array/1D matrix you need not worry about the other dimensions.

类别

在 Help Center 和 File Exchange 中查找有关 Resizing and Reshaping Matrices 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by