Why do i need to use .^ notation ?

2021 4 3
1 个回答
回答已采纳
更新时间：2021 4 3
4 次查看（30 天）

0 个投票

Why do i need to use the .^ notation ? Is there any other way around it ?
% This is my function.
function y = PBTask4P1_f(x)
y = 4.2*x.^4-5*x.^3-7*x;
plot(x,y);
xlabel('INPUT X')
ylabel('OUTPUT Y')
end

请先登录，再回答此问题。

 采纳的回答

KALYAN ACHARJYA
KALYAN ACHARJYA 2021-4-3
编辑：KALYAN ACHARJYA 2021-4-3

0 个投票

It's based on equation. .^ represent the element wise to the power of any array/vector.
See the example
a =
1 2 3 4 5 6
>> a.^2
ans =
1 4 9 16 25 36
Whereas a^2=a*a (Matrix Multiplication)

2 个评论
显示 无 隐藏 无

But the above equation is not an array, is it ? If i remove the dots for y = 4.2*x^4-5*x^3-7*x;, the function fails.
@KALYAN ACHARJYA Thank you so much for the edit. It all makes sense now.

请先登录，再进行评论。

更多回答（0 个）

类别

在 帮助中心 和 File Exchange 中查找有关 Creating and Concatenating Matrices 的更多信息

产品

版本

R2020b

标签

Community Treasure Hunt

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

Start Hunting!

Translated by