Why am i getting 'Array indices must be positive integers or logical values" when trying to plot this function?
1 次查看(过去 30 天)
显示 更早的评论
x1=linspace(asind(1/1.4),90,100)
% Defining functions for M = 1.4, alpha (a) = 1.4
f1(x1)=2*cotd(x1).*(1.4^2.*(sind(x1)).^2-1)./(1.4^2.*(1.4+cosd(2.*x1))+2)-tand(4)
f2(x1)=2*cotd(x1).*(1.4^2.*(sind(x1)).^2-1)./(1.4^2.*(1.4+cosd(2.*x1))+2)-tand(8)
f3(x1)=2*cotd(x1).*(1.4^2.*(sind(x1)).^2-1)./(1.4^2.*(1.4+cosd(2.*x1))+2)-tand(12)
0 个评论
采纳的回答
Simon Chan
2022-3-30
Remove the x1, otherwise it becomes the index of the varaibles f1,f2 & f3 where index must be a positive integers. That's why you get an error
f1=2*cotd(x1).*(1.4^2.*(sind(x1)).^2-1)./(1.4^2.*(1.4+cosd(2.*x1))+2)-tand(4)
f2=2*cotd(x1).*(1.4^2.*(sind(x1)).^2-1)./(1.4^2.*(1.4+cosd(2.*x1))+2)-tand(8)
f3=2*cotd(x1).*(1.4^2.*(sind(x1)).^2-1)./(1.4^2.*(1.4+cosd(2.*x1))+2)-tand(12)
0 个评论
更多回答(0 个)
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Matrices and Arrays 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!