यदि x,y,z शून्येतर वास्तविक संख्याएँ हो तो आवयुक `A=|{:(x,0,0),(0,y,0),(0,0,z):}|` का व्युत्क्रम है:

|{:(x,z,0),(0,y,y),(z,0,x):}|

|{:(" "0," "x,y),(-x," "0,z),(-y,-z,0):}|=0

Choose the correct answer in questions 17 to 19: If x, y, z are nonzero real numbers then the inverse of metrix A=[{:(x,0,0),(0,y,0),(0,0,z):}] is : (a) [{:(x^(-1),0,0),(0,y^(1),0),(0,0,z^(1)):}] (b) xyz[{:(x^(-1),0,0),(0,y^(1),0),(0,0,z^(1)):}] ( c) 1/(xyz)[{:(x,0,0),(0,y,0),(0,0,z):}] (d) 1/(xyz)[{:(1,0,0),(0,1,0),(0,0,1):}]

If x,y,z are nonzero real numbers, then the inverse of matrix A=[{:(x,0,0),(0,y,0),(0,0,z):}] is ………