A. 4
B. 5
C. 4/5
D. 20
The function f(x) =√25-4x2 is decreasing in
An aero plane is flying horizontally at an altitude of 3000 ft directly over an observe. If it is flying with a speed of 300 ft/sec, the rate at which it is moving away from the observe when it is at 5000 ft away from the observe is
For the curve y2=(x+a)3, then square of the sub tangent is ….subnormal
The approximate value of log (2.01), given that log 2=0.6934 is
If there is an error of 0.05 cm, while measuring the side of equilateral triangles as 5 cm, then the percentage error in area is
A man on a wharf 20mt above the water level pulls in a rope to which a boat is attached at the rate of 4mt per second. At what rate is the boat approaching the shore, when there is still 25mt rope out…?
A particle is moving along a line according to the law s=t3-3t2+5. The acceleration of the particle at the instant where the velocity is zero is
A circular plate expands when heated from a radius of 5 cm to 5.06 cm. The approximate increase area is
A stone is projected vertically upwards with an initial velocity 112 ft/sec and moves such that s=112t-16t2 where s is the distance from the starting point and t is the time. The greatest height reached by the stone is
The angle between the curves y2=8, x2=4y-12 at (2, 4) is