For three random variables x1, x2, and y, we have obtained three sets of data: X1, X2, and Y. Next, we perform two different OLS regressions on this data. First, Y is regressed against X1, and then the residuals from this regression are regressed against X2, ultimately yielding a regression coefficient for X2, beta1=0.1. Now, we conduct a regression of Y against both X1 and X2 simultaneously, obtaining a regression coefficient for X2, beta2. What is the range of possible values for beta2?