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List of top Mathematics Questions asked in JKCET
∫
(
s
e
c
x
)
l
o
g
(
s
e
c
x
−
t
a
n
x
)
d
x
=
\int\left(sec\,x\right)log \left(sec\,x-tan\,x\right)dx=
∫
(
sec
x
)
l
o
g
(
sec
x
−
t
an
x
)
d
x
=
JKCET - 2016
JKCET
Mathematics
Integrals of Some Particular Functions
A normal to the curve
2
x
2
−
y
2
=
14
2x^{2 }- y^{2} = 14
2
x
2
−
y
2
=
14
at the point
(
x
1
,
y
1
)
(x_{1}, y_{1})
(
x
1
,
y
1
)
is parallel to the straight line
x
+
3
y
=
4
x + 3y = 4
x
+
3
y
=
4
. Then the point
(
x
1
,
y
1
)
(x_{1}, y_{1})
(
x
1
,
y
1
)
is
JKCET - 2016
JKCET
Mathematics
Application of derivatives
When
y
=
v
x
y = vx
y
=
vx
,
y
y
y
and
x
x
x
are variables, the differential equation
d
y
d
x
=
2
x
y
x
2
−
y
2
\frac{dy}{dx}=\frac{2xy}{x^{2}-y^{2}}
d
x
d
y
=
x
2
−
y
2
2
x
y
reduces to
JKCET - 2016
JKCET
Mathematics
Differential equations
The value of integral
∫
e
x
(
c
o
s
x
+
s
i
n
x
c
o
s
2
x
)
d
x
\int{e^x}(\frac{cosx+sinx}{cos^2x})dx
∫
e
x
(
co
s
2
x
cos
x
+
s
in
x
)
d
x
JKCET - 2016
JKCET
Mathematics
Integrals of Some Particular Functions
Let the function
f
(
x
)
f(x)
f
(
x
)
be continuous in the interval
[
a
,
b
]
[a, b]
[
a
,
b
]
and differentiable in
(
a
,
b
)
(a, b)
(
a
,
b
)
. Then there is at least one point
c
c
c
in
(
a
,
b
)
(a, b)
(
a
,
b
)
at which the tangent to the curve
y
=
f
(
x
)
y = f (x)
y
=
f
(
x
)
is parallel to
JKCET - 2016
JKCET
Mathematics
Differentiability
Let
P
(
x
)
=
10
C
x
(
1
2
)
10
,
x
=
0
,
1
,
2
,
…
,
10
P\left(x\right)=^{10}C_{x} \left(\frac{1}{2}\right)^{10} , x=0, 1, 2, \ldots,10
P
(
x
)
=
10
C
x
(
2
1
)
10
,
x
=
0
,
1
,
2
,
…
,
10
be the probability mass function of a binomial distribution
X
X
X
. Then the mean of
X
X
X
is
JKCET - 2016
JKCET
Mathematics
Probability
If tan
y
=
s
i
n
x
+
c
o
s
x
c
o
s
x
−
s
i
n
x
y=\frac{sin\,x+cos\,x}{cos\,x-sin\,x}
y
=
cos
x
−
s
in
x
s
in
x
+
cos
x
, then
d
y
d
x
=
\frac{dy}{dx}=
d
x
d
y
=
JKCET - 2016
JKCET
Mathematics
Differentiability
The function
f
(
x
)
=
∣
x
−
10
∣
f (x) = |x-10|
f
(
x
)
=
∣
x
−
10∣
,
x
x
x
is real number, is
JKCET - 2016
JKCET
Mathematics
Differentiability
If
2
5
t
h
25^{th}
2
5
t
h
term of an
A
.
P
.
A.P.
A
.
P
.
is
15
15
15
and if its
1
5
t
h
15^{th}
1
5
t
h
term is
25
25
25
, then the
4
0
t
h
40^{th}
4
0
t
h
term of the
A
.
P
.
A.P.
A
.
P
.
is
JKCET - 2016
JKCET
Mathematics
Sequence and series
A pair of unbiased dice is thrown once. Let
X
X
X
be the random variable denoting the product of numbers that appear on the two dice. Then
P
(
X
≥
21
)
=
P\left(X \ge21\right)=
P
(
X
≥
21
)
=
JKCET - 2016
JKCET
Mathematics
Probability
The integrating factor of the differential equation
(
1
+
x
2
)
d
y
d
x
+
x
y
=
c
o
s
x
\left(1+x^{2}\right)\frac{dy}{dx}+xy=cos\,x
(
1
+
x
2
)
d
x
d
y
+
x
y
=
cos
x
is equal to
JKCET - 2016
JKCET
Mathematics
Differential equations
If
32
P
6
=
k
(
32
C
6
)
,
^{32}{{P}_{6}}=k\,{{(}^{32}}{{C}_{6}}),
32
P
6
=
k
(
32
C
6
)
,
then
k
k
k
is equal to
JKCET - 2015
JKCET
Mathematics
permutations and combinations
Consider the curve given by
(
x
2
+
y
2
)
2
=
4
(
x
2
−
y
2
)
{{({{x}^{2}}+{{y}^{2}})}^{2}}=4({{x}^{2}}-{{y}^{2}})
(
x
2
+
y
2
)
2
=
4
(
x
2
−
y
2
)
. Which of the following is not true?
JKCET - 2015
JKCET
Mathematics
Plane
Which of the following is a tangent to the curve given by
x
3
+
y
3
=
2
x
y
?
{{x}^{3}}+{{y}^{3}}=2xy?
x
3
+
y
3
=
2
x
y
?
JKCET - 2015
JKCET
Mathematics
Application of derivatives
The points
(
1
,
3
,
4
)
,
(
−
1
,
6
,
10
)
,
(
−
7
,
4
,
7
)
(1,3,4),\,(-1,6,10),\,(-7,4,7)
(
1
,
3
,
4
)
,
(
−
1
,
6
,
10
)
,
(
−
7
,
4
,
7
)
and
(
−
5
,
1
,
1
)
(-5,1,1)
(
−
5
,
1
,
1
)
JKCET - 2015
JKCET
Mathematics
introduction to three dimensional geometry
The sum of lengths of major and minor axes- of an ellipse whose eccentricity is
4
5
\frac{4}{5}
5
4
and length of latuserectum is
14.4
14.4
14.4
, is
JKCET - 2015
JKCET
Mathematics
Ellipse
If
∣
a
⃗
∣
=
7
|\vec {a} |=7
∣
a
∣
=
7
and
∣
b
⃗
∣
=
11
,
|\vec {b} |=11,
∣
b
∣
=
11
,
then the angle between the vectors
a
⃗
+
b
⃗
\vec {a} +\vec {b}
a
+
b
and
a
⃗
−
b
⃗
\vec {a} -\vec {b}
a
−
b
is equal to
JKCET - 2015
JKCET
Mathematics
Vector Algebra
At present, a firm manufactures 1099 items. It is estimated that the rate of change of production P with respect to additional number of workers x is given by
d
P
d
x
=
100
−
12
x
.
\frac{dP}{dx}=100-12\sqrt{x}.
d
x
d
P
=
100
−
12
x
.
. If the firm empower 25 more workers, then the new level of production of items is
JKCET - 2015
JKCET
Mathematics
Differential equations
In an isosceles right angled triangle
A
B
C
ABC
A
BC
, a value of
tan
(
A
2
)
+
tan
(
B
2
)
+
tan
(
C
2
)
\tan \left( \frac{A}{2} \right)+\tan \left( \frac{B}{2} \right)+\tan \left( \frac{C}{2} \right)
tan
(
2
A
)
+
tan
(
2
B
)
+
tan
(
2
C
)
is
JKCET - 2015
JKCET
Mathematics
Trigonometric Functions
The function is
f
(
x
)
=
1
2
−
cos
3
x
,
x
∈
[
0
,
π
3
]
,
f(x)=\frac{1}{2-\cos \,3x},\,x\,\in \left[ 0,\frac{\pi }{3} \right],
f
(
x
)
=
2
−
c
o
s
3
x
1
,
x
∈
[
0
,
3
π
]
,
is
JKCET - 2015
JKCET
Mathematics
Functions
Let function
f
(
x
)
=
(
x
−
1
)
2
(
x
+
1
)
3
.
f(x)={{(x-1)}^{2}}{{(x+1)}^{3}}.
f
(
x
)
=
(
x
−
1
)
2
(
x
+
1
)
3
.
Then, which of the following is false?
JKCET - 2015
JKCET
Mathematics
Application of derivatives
The last digit in the integer
3
101
+
1
{{3}^{101}}+1
3
101
+
1
is
JKCET - 2015
JKCET
Mathematics
general and middle terms
The derivative of
s
i
n
x
sin\, x
s
in
x
with respect to
c
o
s
x
cos\text{ }x
cos
x
is
JKCET - 2015
JKCET
Mathematics
Differentiability
lim
x
→
0
sin
x
2
1
−
cos
x
\underset{x\to 0}{\mathop{\lim }}\,\,\frac{\sin {{x}^{2}}}{1-\cos x}
x
→
0
lim
1
−
c
o
s
x
s
i
n
x
2
is
JKCET - 2015
JKCET
Mathematics
limits and derivatives
If getting a number greater than
4
4
4
is a success in a throw of a fair die, then the probability of at least
2
2
2
successes in six throws of a fair die is
JKCET - 2015
JKCET
Mathematics
Probability
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