![The image depicts a projection screen within a classroom or lecture hall at the University of Florida in Gainesville, United States of America. The screen displays financial mathematics or economics coursework from a digital application identified as Microsoft OneNote, labeled "AEB 4138 FA23" in the title bar.
The primary subject on the screen is a series of calculations related to portfolio variance. A problem titled "Q.10.3" shows the formula $\sigma_P^2 = \sigma_1^2 X_1^2 + \sigma_2^2 X_2^2 + 2\rho_{12}\sigma_1\sigma_2 X_1 X_2$, followed by a numerical substitution: $(.1)^2(.5)^2 + (.1)^2(.5)^2 + 2(-0.5)(.1)(.1)(.5)(.5)$, which yields $0.0025$. The square root of this value, $\sigma_P = 0.05$, is also displayed. Below this, a new section begins with "For 3 investments:", showing the expected return formula $E[r_p] = E[r_1]X_1 + E[r_2]X_2 + E[r_3]$ and a partial variance formula for a three-asset portfolio. The OneNote interface shows various tabs (File, Home, Insert, Draw, View, Help) and notebook sections (Fin Statement..., Debt, CAPM, WACC, Untitled Page, CAPM & Spp).
The environment includes a light grey ceiling with visible grid patterns and reflective light fixtures in the upper right. A dark border runs along the bottom of the projection screen, and a segment of a green surface or board is visible on the far left. No individuals are present in the frame; the photograph is captured from an elevated, oblique angle focused on the projected content.](https://firebasestorage.googleapis.com/v0/b/patr-3a75e.appspot.com/o/uploads%2Fimage_picker_e774c4c4-828c-4e9b-9.jpg?alt=media)
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The image depicts a projection screen within a classroom or lecture hall at the University of Florida in Gainesville, United States of America. The screen displays financial mathematics or economics coursework from a digital application identified as Microsoft OneNote, labeled "AEB 4138 FA23" in the title bar. The primary subject on the screen is a series of calculations related to portfolio variance. A problem titled "Q.10.3" shows the formula $\sigma_P^2 = \sigma_1^2 X_1^2 + \sigma_2^2 X_2^2 + 2\rho_{12}\sigma_1\sigma_2 X_1 X_2$, followed by a numerical substitution: $(.1)^2(.5)^2 + (.1)^2(.5)^2 + 2(-0.5)(.1)(.1)(.5)(.5)$, which yields $0.0025$. The square root of this value, $\sigma_P = 0.05$, is also displayed. Below this, a new section begins with "For 3 investments:", showing the expected return formula $E[r_p] = E[r_1]X_1 + E[r_2]X_2 + E[r_3]$ and a partial variance formula for a three-asset portfolio. The OneNote interface shows various tabs (File, Home, Insert, Draw, View, Help) and notebook sections (Fin Statement..., Debt, CAPM, WACC, Untitled Page, CAPM & Spp). The environment includes a light grey ceiling with visible grid patterns and reflective light fixtures in the upper right. A dark border runs along the bottom of the projection screen, and a segment of a green surface or board is visible on the far left. No individuals are present in the frame; the photograph is captured from an elevated, oblique angle focused on the projected content.
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