Not enough input arguments.

Hello, somebody correct for me this code please, am getting 'Not enough input arguments' error.

main script

x=rand(1,100).*10;
noise=randn(1,100);
y=2.^x+5+noise;

figure
plot(x,y,'go')
grid on

% A=1;B=0;
constant=lsqcurvefit(fanct,[0,0],x,y);

A=constant(1);
B=constant(2);

xfit=(0:0.1:100);
yfit=funct(constant,xfit);

figure
plot(x,y,'bo',xfit,yfit,'r-')
grid on

function

function E=fanct(x0,~,~)
A=x0(1);B=x0(2);
E=(A^x)+(B);
end

[KALYAN ACHARJYA]

Have you used some customized function here, a function defined is not permitted here

function function E=fanct(x0,~,~) A=x0(1);B=x0(2); E=(A^x)+(B); end

Answer 1

[Ameer Hamza]

x=rand(1,100).*10; 
noise=randn(1,100); 
y=2.^x+5+noise;

figure 
plot(x,y,'go') 
grid on

% A=1;B=0; 
% constant=lsqcurvefit(@fanct,[0,0],x,y);
constant=lsqcurvefit(@funct,[0,0],x,y)

A=constant(1);
B=constant(2);

xfit=(0:0.1:100); 
yfit=funct(constant,xfit);

figure 
plot(x,y,'bo',xfit,yfit,'r-') 
grid on 

function E=funct(x0, x) 
A=x0(1);B=x0(2); 
E=(A.^x)+(B); 
end