Error using inline/subsref (line 13) Not enough inputs to inline function.

hi guys

Please if anyone can help me with my code. i face an error that says

Error using inline/subsref (line 13)
Not enough inputs to inline function.

Error in Bisection (line 9)
ya = f(a);      yb = f(b);

f = inline('x-e^(-x)')
a = 0;          b = 1;   % [a,b], f(a) = -, f(b) = +
imax = 10;      % imax = maximum number of iterations
et = 0.0001;    % et = error tolerance
ya = f(a);      yb = f(b);

if sign(ya) == sign(yb),
    error('Function has same sign at end points'),
end

disp('     n        a           b           c            b-c          f(c)     ')

for n = 1:imax
    c = (a+b)/2;
    yc = f(c);
    iter = n;                           % iter = count for iteration
    bound = (b-c);
    out = [ iter, a, b, c, bound, yc ];
    disp( out)
    if abs(yc) < et,
        disp('Bisection has converged');
        break;
    end

      if sign(yc) ~= sign (ya),
          b = c;
          yb = yc;
      else
          a = c;
          ya = yc;
      end

      if (iter >= imax),
          disp('Zero not found to desired tolerance'),
      end
  end

Thank you

Answer 1

[Patrik Ek]

In matlab the naturlal number e is not defined. It is still a variable. You can try by just typing e. Instead of using you just uses exp.

a = exp(x);

in matlab is the same as e^x analytically. Also try,

f = inline('e.^x')
% or
f2 = inline('e^x')

and you will see f and f2 are functions of 2 variables and not one.

[Steven]

Thank you very much Dude.