<t>in general, the bond price is a function of the short rate and maturity P(r(t),t,t+T)and r(t) is a one-dimensional diffusion which depends on dWapplying Ito's formula for two different maturities will give dP(r(t),t,t+T1) = drift1 + vol1 * dWdP(r(t),t,t+T2) = drift2 + vol2 * dWand the instantaneo...