Why doesn't the graph show?

Question

Jessica Lee 2015-10-21

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/250221-why-doesn-t-the-graph-show

评论： Jessica Lee 2015-10-22

%%ENGS103P
% Coursework 1
% 21 October, 2015
% Question 2(b)
A=0.009; % m
k=9800; % N/m
m=1; % kg
t=0,0.001,1;
x=A*cos(sqrt(k/m)*t); % m
plot(x,t)
grid on
xlabel('t')
ylabel('x')
title('Graph of x against t')

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Answer 1

aacarey 2015-10-21

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/250221-why-doesn-t-the-graph-show#answer_196920

t = 0,0.001,1; % The commas can be read kind of like "t has the values 0 and 0.001 and 1".

What you need to do instead is use colons

t = 0:0.001:1; % The colons can be read kind of like "t is all the values spanning 0 to 1 in increments of 0.001"

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dpb 2015-10-22

mmmm....I hate to let the cat out of the bag too easily on homework; would prefer the student find the issue themselves with a little a hint as possible. The learning experience tends to be enhanced that'a'way.

Jessica Lee 2015-10-22