Supplies are dropped from a helicopter and distance fallen in time t seconds is given by x = 1/2 gt2 where g = 9.8 m/sec2 .Determine the velocity of the supplies after it has falls for 2 seconds.
19.2
19.4
19.6
19.8
The distance x meters described by a car in time t seconds is given by x = 3 t2 - 2 t2 + 4 t - 1. Determine the velocity when t = 0
4
5
6
7
For the curve x = t2-1, y = t2 - t, the tangent is perpendicular to x - axis when
t = 0
t = 1
The slope of the tangent to the curve y = 3 x2 +3 sinx at x = 0 is
3
2
1
-7
The value of
-2
-1
The equation of the tangent to the curve at the point is
5 y + 3 x = 2
5 y - 3 x = 2
3 x - 5 y = 2
3 x + 3 y = 2
The gradient of the curve y = at x = 2 is
-20
27
16
-21
The value of c by Rolles theorem, for the function f(x) = 1- in the interval [-1,1] is
0
If the length of the diagonal of a square is increasing at the rate of 0.1 cm/sec. What is the rate of increase of its area when the side is 15/√2 cm ?
1.5
3√2
0 . 15
The point on the curve y =2 x2 - 6 x - 4 at which the tangent is parallel to the x - axis is
