UGC-NET | UGC-NET CS 2017 Nov – III | Question 16

Find the equation of the circle x2+y2=1 in terms of x’y’ coordinates, assuming that the xy coordinate system results from a scaling of 3 units in the x’ direction and 4 units in the y’ direction.

(A) 3(x’)2 + 4(y’)2 = 1
(B) (x’/3)2 + (y’/4)2 = 1
(C) (3x’)2 + 4(y’)2 = 1
(D) 1/3(x’)2 + 1/4(y’)2 = 1

Answer: (B)


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