How to plot a function over an interval of two functions?

Hello,

I am trying to plot a symbolic function using fplot. I want to plot the function over an interval of two functions, but it is showing an error ''Too many functions''. Is there a way to solve this problem?

syms v

Ncrn1= 2.5429/v^2 + 0.3251*v^2;

fplot(v,Ncrn1,[0,9],'--')

Ncrn2=5.1624/v^2 + 0.0869*v^2;

fplot(v,Ncrn2,[0,9],'--')

Ncrn3=9.2372/v^2 + 0.0404*v^2;

fplot(v,Ncrn3,[0,9],'--')

hold on

int=solve(Ncrn2-Ncrn1==0,v)

inter1=int(real(int)>0&imag(int)==0);

fplot(v,Ncrn1,[0 inter1],'r','LineWidth',1.5);

hold on

int=solve(Ncrn3-Ncrn2==0,v);

inter2=int(real(int)>0&imag(int)==0);

fplot(v,Ncrn2,[inter1 inter2],'r','LineWidth',1.5);

Answer 1

[Dyuman Joshi]

Convert the solution obtained by solve() to double.

syms v
Ncrn1= 2.5429/v^2 + 0.3251*v^2;
fplot(v,Ncrn1,[0,9],'--')

Ncrn2=5.1624/v^2 + 0.0869*v^2;
fplot(v,Ncrn2,[0,9],'--')

Ncrn3=9.2372/v^2 + 0.0404*v^2;
fplot(v,Ncrn3,[0,9],'--')
hold on
int=solve(Ncrn2-Ncrn1==0,v);
%Conversion
inter1=double(int(real(int)>0&imag(int)==0))

inter1 = 1.8210

fplot(v,Ncrn1,[0 inter1],'r','LineWidth',1.5)
hold on
int=solve(Ncrn3-Ncrn2==0,v);
%Conversion
inter2=double(int(real(int)>0&imag(int)==0))

inter2 = 3.0596

fplot(v,Ncrn2,[inter1 inter2],'r','LineWidth',1.5)

[SAM]

I have been trying for a while.. Thank you so much!