xy = 2 এবং xy2 = 8 হলে x = ?
সমাধান
সঠিক উত্তর: Option C
xy = 2 ............ (1)
xy2 = 8 ............(2)
(2)/(1) হতে পাই,
(xy2)/(xy) = 8/2
∴ y = 4
এখন,
xy = 2
⇒ x = 2/y
⇒ x = 2/4
∴ x = 1/2
xy2 = 8 ............(2)
(2)/(1) হতে পাই,
(xy2)/(xy) = 8/2
∴ y = 4
এখন,
xy = 2
⇒ x = 2/y
⇒ x = 2/4
∴ x = 1/2
