4. Consider an interface deformed in simple shear with a velocity gradient of L=00000000. The initial interface has an area of A0 and a unit normal of n^0=n01n02n03. Write the interfacial "You can slide the homework under the door of the instructor's office if the instructor is not in his office. area A as a function of time t in terms of the variables defined above (that is, ,A0,n01,n02 and n03 )