If x=at2 , y=2at ,then d2y / dx2 =
-1/t2
1/2at3
-1/t3
-1/2at3
If y = log[log (log x)], then dy/dx is
1/ log (logx)
1/ x log (log x)
1/ x logx log (logx)
x/ log (logx)
Given f (x) = 1/2x-1 , then for x = 0
f ' (x) vanishes
f ' (x) = f(x)
f ' (x) >0
f ' (x) <0
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
1
3
2
6
5 (2x+3)4
(2x+3)4
10 x
10 (2x+3)4
If f(0) =0=g(0) and f ' (0)=6=g ' (0),then is given by ________ ?
0
12
-1
32
16
10x9
64
Cos√x
1/2 sin√x
Cos √x / 2√x
sin√x
2/1+x2
2x/1+x2
-2/1+x2
None of these
