If u = , then is equal to
u
-u
The differential of x5 is
5 x3 d x
4 x4 d x
5 x5d x
5 x4d x
If x = r cos θ, y = r sinθ then is equal to
sec θ
sin θ
cos θ
cosec θ
If y = x3 +2 x2 , find d y
(3 x2 +4 x) d x
(3 x2 + 4 x2 )d x
(4 x2 +3 x) d y
None of these
Find the differential d y and evaluate dy for the given values of x and d x
y = , x = 0, d x = 0.02
0.1
0.01
0.001
-0.01
If u = xy , then is equal to
yxy-1
u log x
u log y
x yx-1
If u = and f= sin u, then f is a homogeneous function of degree
0
1
2
4
The differential of is
none of these
Find the differential d y and evaluate d y for the given values of x and d x y = x4- 3 x2+ x - 1, x = 2, d x = 0.1
1.1
2.1
3.1