Plot figures in loop as superimposed top on top

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JohnDylon 2016-11-19

评论： Image Analyst 2016-11-20

Similar questions should have been asked however I couldn't get a solution.

Plot can superimpose these loop figures onto one another:

figure();
hold all
for i=1:2:11
    y=i;
    plot(x,y);
end

However, interestingly can't do the same here:

figure();
hold all
for i=1:2:11
    y=x.^i;
    plot(x,y);
end

What it does is plotting only the last figure. Any ideas why is this?

KSSV 2016-11-19

编辑：KSSV 2016-11-19

Used hold on after the plot inside loop.

KSSV 2016-11-20

What is x?

Image Analyst 2016-11-20

Is x a vector or scalar? What is/are its value(s) exactly? Give code to generate x.

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