Saved Bookmarks
| 1. |
(b). If y is mean proportional between x and z, prove that xyz (xy+zxy yzx. ( |
|
Answer» Y is the mean proportional between x and z so, y/z = x/y y^2 =xz now, LHS =xyz(x + y + z)^3 =y(xz){x + y + z }^3 =y^3(x + y + z)^3 =(xy + yz + zx)^3 = RHS |
|