To find the general solution of a sinusoidal function algebraically, it's important to clarify that functions do not have solutions, but equations do. The equation provided, y=2+5cos(3.14/10)(x-3), involves two variables, which complicates the process. The term "algebraic method" is vague, as algebra encompasses various techniques for solving equations. Due to the presence of the cosine function, which is transcendental, there is no exact method for solving for x when it appears both inside and outside the function. Understanding these distinctions is crucial for approaching sinusoidal equations.