The document discusses using the Newton-Raphson method to find the root of a function. It gives the function f(x)=3x - ex + sinx and its derivative f'(x)=3 - ex + cosx. With an initial guess of x0=0.333, it calculates f(x0)=-0.069 and f'(x0)=2.55 to get the next estimate x1=0.360 using the Newton-Raphson formula x1=x0 - f'(x0)/f(x0).