A particle is acted on by two torques about the origin: τ ➝1 has a magnitude of 9.1 N·m and is directed in the positive direction of the x axis, and τ ➝2 has a magnitude of 7.6 N-m and is directed in the negative direction of the y axis. In unit-vector notation, find d l ➝/d t, wherel l➝ is the angular momentum of the particle about the origin.