If x=t2 , y=t3 , then d2y / dx2 =
3/2
3/4t
3/2t
3t/2
2/1+x2
2x/1+x2
-2/1+x2
None of these
If f(x) = 3x2 -4x, the value of a if f '(a )= 5 is
3
4
-1
The gradient of y = x2 + 5x at (0,0) is
5
0
1
2
32
16
10x9
64
The gradient of the function x - 7x2 is
-7x2
1-7x
1-14 x
-14 x
Ler f(x) =exg(x),g(0) = 4,g ' (0)=2,then f ' (0) is
6
Cos√x
1/2 sin√x
Cos √x / 2√x
sin√x
Derivative of is
ex
e . ex
The derivative of cos√x is
- sin √x
- sin √x/ 2 √x