The derivative of cos√x is
- sin √x
sin√x
1/2 sin√x
- sin √x/ 2 √x
If x=at2 , y=2at ,then d2y / dx2 =
-1/t2
1/2at3
-1/t3
-1/2at3
If f(0) =0=g(0) and f ' (0)=6=g ' (0),then is given by ________ ?
1
0
12
-1
The possible values of a if
1,-1
0, -1
The gradient of the function x - 7x2 is
-7x2
1-7x
1-14 x
-14 x
Derivative of is
ex
e . ex
2/1+x2
2x/1+x2
-2/1+x2
None of these
Cos√x
Cos √x / 2√x
Given f (x) = 1/2x-1 , then for x = 0
f ' (x) vanishes
f ' (x) = f(x)
f ' (x) >0
f ' (x) <0
If f(x) = 3x2 -4x, the value of a if f '(a )= 5 is
3
4
3/2
