Matlab plot problem line 13

2021 5 11
2 个回答
回答已采纳
更新时间：2021 5 11
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0 个投票

What appropriate code should i use on line 13?
syms r K E y
eqn = r*(1-y/K)*y-E*y==0;
S = solve(eqn);
y1=S(1);
y2=S(2);
dydt=@(y, E, r, k) r .* (1-y/K) .* y-E*y;
h=0.01;
E=1;
r=2;
K=1;
y = y1-h:h:subs(y2)+h;
subplot(1, 1, 1)
plot(y, dydt(y, E, r, K)) %Plot not working
title('f(y) Function')
xlabel('y')
ylabel('dy/dt')
grid on

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 采纳的回答

VBBV
VBBV 2021-5-11

1 个投票

%if true
plot(y, double(subs(dydt(y, E, r,K))));

更多回答（1 个）

Stephan
Stephan 2021-5-11
Ran in:

1 个投票

Ran in:
syms r E y K
eqn = r*(1-y/K)*y-E*y==0;
S = solve(eqn);
y1=S(1);
y2=S(2);
h=0.01;
E=1;
r=2;
K=1;
y = double(y1-h:h:subs(y2)+h);
dydt=@(y, E, r, k) r .* (1-y/K) .* y-E*y;
subplot(1, 1, 1)
plot(y, dydt(y, E, r, K)) %Plot not working
title('f(y) Function')
xlabel('y')
ylabel('dy/dt')
grid on

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