百度作业网下面这个matlab程序错在哪里呀,为什么只能出来一个图像?
来源：学生作业帮 编辑：百度作业网作业帮 分类：综合作业 时间：2024/06/13 12:15:41
下面这个matlab程序错在哪里呀,为什么只能出来一个图像?
v=dsolve('m*D2v+2*k*v*Dv=0','v(0)=0,Dv(0)=g','t')
x=dsolve('m*g-k*(Dx)^2=m*D2x','x(0)=0,Dx(0)=0,D2x(0)=g','t')
m=75;
k=0.22;
g=9.8
t=0:0.5:30;
v =tanh(t.*(g*m*k)^(1/2)/m)*(g*m*k)^(1/2)/k
%x=(m/k)*log(cosh(t.*(k*g/m)^1/2))
plot(t,v),gtext('v(t)')
hold on
plot(t,x),gtext('x(t)')
v=dsolve('m*D2v+2*k*v*Dv=0','v(0)=0,Dv(0)=g','t')
x=dsolve('m*g-k*(Dx)^2=m*D2x','x(0)=0,Dx(0)=0,D2x(0)=g','t')
m=75;
k=0.22;
g=9.8
t=0:0.5:30;
v =tanh(t.*(g*m*k)^(1/2)/m)*(g*m*k)^(1/2)/k
%x=(m/k)*log(cosh(t.*(k*g/m)^1/2))
plot(t,v),gtext('v(t)')
hold on
plot(t,x),gtext('x(t)')
v=dsolve('m*D2v+2*k*v*Dv=0','v(0)=0,Dv(0)=g','t')
x=dsolve('m*g-k*(Dx)^2=m*D2x','x(0)=0,Dx(0)=0,D2x(0)=g','t')
m=75;
k=0.22;
g=9.8
t=0:0.5:30;
v =tanh(t.*(g*m*k)^(1/2)/m)*(g*m*k)^(1/2)/k
x=(m/k)*log(cosh(t.*(k*g/m)^1/2))
figure
plot(t,v),gtext('v(t)')
figure
plot(t,x),gtext('x(t)')
x=dsolve('m*g-k*(Dx)^2=m*D2x','x(0)=0,Dx(0)=0,D2x(0)=g','t')
m=75;
k=0.22;
g=9.8
t=0:0.5:30;
v =tanh(t.*(g*m*k)^(1/2)/m)*(g*m*k)^(1/2)/k
x=(m/k)*log(cosh(t.*(k*g/m)^1/2))
figure
plot(t,v),gtext('v(t)')
figure
plot(t,x),gtext('x(t)')