ranjitaarao wrote:
Is a < 2?
(1) In an xy plane, point (a,1) lies inside the circle whose equation is x^2 + y^2 = 3
(2) In an xy plane, point (a,4) lies on the line whose equation is 2y + 4x = 10
Hey Bunuel
This is how I'm thinking of statement 1
I know (x-a)^2+(y-b)^2<r^2 when point (a,b) lie inside the circle. Similarly, I know - (1)
(x-a)^2+(y-b)^2>(r^2) when point is outside the circle
(x-a)^2+(y-b)^2=(r^2) when points lie inside the circle.
inputting values of (a,1) in (1) , i get a^2<2 & hence value of a lies -√ 2<a<√ 2 . Hence, a is definitely less than 2.
Statement 2
Gives me a=1/2 after inputting the values of (a,4) in the equation of the line.
Does this method work?
Statistics : Posted by ahujaparth10 • on 09 Oct 2013, 10:15 • Replies 17 • Views 61280
