WB JEE 2017 | Application of Derivatives Question 50 | Mathematics

WB JEE 2017

MCQ (More than One Correct Answer)

-0

If the line ax + by + c = 0, ab $$ \ne $$ 0, is a tangent to the curve xy = 1 $$-$$ 2x, then

a > 0, b < 0

a > 0, b > 0

a < 0, b > 0

a < 0, b < 0

WB JEE 2017

MCQ (More than One Correct Answer)

-0

Two particles move in the same straight line starting at the same moment from the same point in the same direction. The first moves with constant velocity u and the second starts from rest with constant acceleration f. Then,

they will be at the greatest distance at the end of time $${u \over {2f}}$$ from the start

they will be at the greatest distance at the end of time $${u \over f}$$ from the start

their greatest distance is $${{{u^2}} \over {2f}}$$

their greatest distance is $${{{u^2}} \over f}$$

WB JEE Subjects