where formula_21 are the coordinates of a point on the cross section at which the stress is to be determined as shown to the right, formula_22 and formula_14 are the bending moments about the y and z centroid axes, formula_24 and formula_16 are the second moments of area (distinct from moments of inertia) about the y and z axes, and formula_26 is the product of moments of area. Using this equation it is possible to calculate the bending stress at any point on the beam cross section regardless of moment orientation or cross-sectional shape. Note that formula_27 do not change from one point to another on the cross section.