Which of the following function is not differentiable at x=1?
- f(x)=(x²−1)|(x−1)(x−2)|
- f(x)=sin(|x−1|)−|x−1|
- f(x)=tan(|x−1|)−|x−1|
- None
The points at which the function f(x)=(x+1)⁄(x²+x−12) is discontinuous, are
- ?3, 4
- 3, ?4
- ?1,?3, 4
- ?1, 3, 4
In order that the functionf(x)=(x+1)^1/xis continuous at x=0, f(0)must be defined as
- f(0)=0
- f(0)=e
- f(0)=1/e
- f(0)=1
If f(x)=e^1/x, when x≠0 & f(x)=0, when x=0, then
- limx→0+ f(x)=e
- limx→0+ f(x)=0
- f(x)is discontinuous at x=0
- None
Let f(x)=x²+k, when x≥0 & f(x)=−x²−k, when x<0. If the function f(x) be continuous at x=0, then k =
- 0
- 1
- 2
- none
Let f(x)= (x³+x²−16x+20)⁄(x−2)² ,if x≠2 & f(x)= k, if x=2. If f(x) be continuous for all x, then k =
- 7
- -7
- ±7
- None
The function f(x)=[log(1+ax)−log(1−bx)]/x is not defined at x=0. The value which should be assigned to f at x =0 so that it is continuos at x=0, is
- a−b
- a+b
- loga+logb
- loga−logb
If the function f(x)= (kcosx)/(π−2x),when x≠π/2 & f(x)=3, when x=π/2 be continuous at x=π/2, then k =
- 3
- 6
- 12
- none
A point where function f(x)=[sin[x]] is not continuous in (0,2π), [.] denotes the greatest integer ≤x, is
- (3, 0)
- (2, 0)
- (1, 0)
- None
limx→0 (x³cotx)/(1−cosx)
- 0
- 1
- 2
- None
limx→1 1/|1−x|=
- 0
- 1
- 2
- ∞
If f(x)=|x|, then f(x) is
- Continuous for all x
- Differentiable at x=0
- Neither continuous nor differentiable at x=0
- None
The function f(x)=sin|x| is
- Continuous for all x
- Continuous only at certain points
- Differentiable at all points
- None
(d/dx)(sin⁻¹x)
- 1/√(1-x²)
- 1/x√(1-x²)
- 1/(1+x²)
- None
(d/dx)(cos⁻¹x)
- 1/√(1-x²)
- 1/x√(1-x²)
- 1/(1+x²)
- -1/√(1-x²)
(d/dx)(tan⁻¹x)
- 1/√(1-x²)
- 1/x√(1-x²)
- 1/(1+x²)
- None
(d/dx)(cot⁻¹x)
- 1/√(1-x²)
- -1/(1+x²)
- 1/(1+x²)
- None
(d/dx)(sec⁻¹x)
- 1/√(1-x²)
- 1/x√(1-x²)
- -1/x√(1-x²)
- None
(d/dx)(cosec⁻¹x)
- 1/√(1-x²)
- 1/x√(1-x²)
- 1/(1+x²)
- -1/x√(1-x²)
(d/dx)(eⁿ)=
- 1/x
- eⁿ
- 0
- 1
(d/dx)(logx)=
- 1/x
- eⁿ
- x
- 0
Differentiate w.r.t. x, log₇(log x)
- 1/(xlogx)
- 1/(xlog7logx)
- 1/(logx)
- None
Find the second order derivatives of the functions sin (log x)
- -[logx+1]/(x.logx)²
- -[logx+1]/(x.logx)
- -[logx]/(x.logx)²
- [logx+1]/(x.logx)²
Find the second order derivatives of the functions x²+2x+3
- 1
- 2
- 3
- 0
Find the second order derivatives of the functions log x
- x²
- -1/x
- -1/x²
- None