I have a fairly large transcendental equation which I write in the form f(x) = 0. I have attempted to use Newton Raphson to get some form of convergence but it often does not converge to the correct value. Plotting the function I found a discontinuity just after the solution. Is there a mathematical method which can deal with such transcendental equations, or is there even a method which can tell me all the solutions of an equation rather than just one of the roots? I am using Matlab, if that helps. Thanks in advance.