Q2. Determine the type of each of the following second order linear partial differential equations and reduce them to their canonical form. Whenever it is possible solve them as well. (i) (ii) (iii) 2202 მx2 + 2X9 მ}მყ J²u +25 Jy2 = 0. J²u J²u -5- =0. dxəy 12- მე2 8²u 82u ди +9 + = 0. dxdy by 2 by