Search found 4 matches
Another quick approach is to find the option where replacing x by 1-x does not change the expression A 1-x > 1-(1-x)=x changes B 1-x^2> 1-(1-x)^2 1-1-x^2+2x + 2x - x^2 changes C x^2 -(1-x)^2 > (1-x)^2-(1-(1-x))^2 = (1-x)^2-x^2 changes D x^2(1-x)^2>(1-x)^2(1-(1-x))^2= (1-x)^2.x^2 does not change E x/...
- by QuantVeda
Fri Apr 25, 2014 10:01 am- Forum: Problem Solving
- Topic: Function
- Replies: 2
- Views: 3442
You can solve it this way:
1/x -1/x+1 = 1/x+4
(x+1-x)/x(x+1)=1/x+4
1/x(x+1) = 1/x+4
x(x+1)= x+4
x^2 +x = x+4
x^2 =4
x = +2
option c is correct one
- by QuantVeda
Thu Apr 24, 2014 12:29 pm- Forum: Problem Solving
- Topic: OG #216
- Replies: 6
- Views: 2009
You can instantly solve this question if you know that when a right angle is rotated then co-ordinates of the one points on circumference is given by interchanging the absolute value of x and y coordinate of other and changing the sign according to quadrant. Co ordinate of first point -> (-sqrt(3),1...
- by QuantVeda
Thu Mar 20, 2014 12:09 am- Forum: Data Sufficiency
- Topic: Please help with this geometry question
- Replies: 4
- Views: 1804
To get this question right, you have to visualize the problem. In this problem, both cars is at a point and are moving in opposite direction i.e. if first car moves towards east from initial point, second car moves towards west from the same initial point.once you visualize the problem, you will rea...
- by QuantVeda
Wed Mar 19, 2014 10:56 pm- Forum: Problem Solving
- Topic: I am having trouble with distance calculation (2)
- Replies: 4
- Views: 2934