What's wrong with my code?
显示 更早的评论
here's my code..
syms a
b=2; e=0.9; q=0.4; g=0.6; k=0; d=0.5;
a=1:1:5;
N(a) = (q*b*e/a-d*e)/((q^2)*(e^2)/a+2*e*g)
pi(a)=(b-q*N*e)/a
m=N(a)
n=pi(a)
plot (a,N(a),'b')
hold on
plot (a, pi(a),'red')
When I run it, it gives me these errors.
Error using /
Matrix dimensions must agree.
Error in sev (line 31)
N(a) = (q*b*e/a-d*e)/((q^2)*(e^2)/a+2*e*g)
When I use "./", it plots only pi, but N is on x axis fixed at 0, what can I do to make it work?
采纳的回答
Star Strider
2020-6-6
Try this:
syms a
b=2; e=0.9; q=0.4; g=0.6; k=0; d=0.5;
% a=1:1:5;
N(a) = (q*b*e/a-d*e)/((q^2)*(e^2)/a+2*e*g)
fpi(a)=(b-q*N*e)/a
m=N(a)
n=fpi(a)
figure
fplot (N(a),[1 5],'b')
hold on
fplot (fpi(a), [1 5],'red')
hold off
.
5 个评论
Ani Asoyan
2020-6-6
Ani Asoyan
2020-6-6
Star Strider
2020-6-6
Note : I commented-out this line so that it does not execute:
% a=1:1:5;
So the code I posted with that change runs without error (in R2020a) and produces:
Remove (or comment-out) the ‘a’ assighment as I did, and my code works.
Ani Asoyan
2020-6-6
Star Strider
2020-6-6
As always, my pleasure!
更多回答（1 个）
madhan ravi
2020-6-6
Naming a variable pi is a bad idea
doc pi
3 个评论
Ani Asoyan
2020-6-6
madhan ravi
2020-6-6
a=1:5 should be after N(a)... and implying ./
Ani Asoyan
2020-6-6
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