In finance, we need to do partial observations of data and estimate the data generating process (DGP)--for example, log-normal returns. Sometimes, we can observe only the data points of a certain process, but we don't know what is the function generating the process. Consider the following graph is a plot of the f'(x), of a function f(x) given. What is the underlaying function (f(x_i)) that is the generator of the observed points in the plot f'(x_i), for points x_1=-1.x_2=-0.9.x_n=1? O f(x) = 5x5x +5x - 6x - 5 f(x) = 5x - 5x +5x - 6 f(x) = -9 log(4x) f(x) = log(x)

In finance, we need to do partial observations of data and estimate the data generating process (DGP) -- for example, log-normal returns. Sometimes, we can observe only the data points of a certain process, but we don't know what is the function generating the process. Consider the following graph is a plot of the f(x), of a function f(x) given. What is the underlaying function (f(xi)) that is the generator of the observed points in the plot f(x), for points x1=1,x2=0.9,,xn=1 ? f(x)=5x45x3+5x26x5 f(x)=5x35x2+5x6 f(x)=9log(4x)f(x)=log(x)