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Mathematics
List of top Mathematics Questions
If a hyperbola passes through the point P(
\(\sqrt{2},\sqrt{3}\)
) and has foci at (±2,0), then the tangent to this hyperbola at P is
WBJEE - 2023
WBJEE
Mathematics
Hyperbola
Given
\(\frac{d^2y}{dx^2}=cot\,x\frac{dy}{dx}+4y\,cosec^2x=0\)
. Changing the independent variable x to z by the substitution z=log tan
\(\frac{x}{2}\)
, the equation is changed to
WBJEE - 2023
WBJEE
Mathematics
Second Order Derivative
If y=
\(\frac{x}{log_e|cx|}\)
is the solution of the differential equation
\(\frac{dy}{dx}=\frac{y}{x}+\phi(\frac{x}{y})\)
, then
\(\phi (\frac{x}{y})\)
is given by
WBJEE - 2023
WBJEE
Mathematics
Differential equations
If
\(\int \frac{dx}{(x+1)(x-2)(x-3)}=\frac{1}{k}log_e\left \{ \frac{|x-3|^3|x+1|}{(x-2)^4}\right \}+c\)
, then the value of k is
WBJEE - 2023
WBJEE
Mathematics
Integrals of Some Particular Functions
The expression
\(\frac{\int_{0}^{n}[x]dx}{\int_{0}^{n}\left \{ x\right \}dx}\)
, where [x] and {x} are respectively integral and fractional part of x and n∈N, is equal to
WBJEE - 2023
WBJEE
Mathematics
Some Properties of Definite Integrals
Let f:[1,3]
\(\rightarrow\)
R be continuous and be derivable in (1,3) and f'(x)=[f(x)]
2
+4∀x∈(1,3). Then
WBJEE - 2023
WBJEE
Mathematics
Relations and functions
Let
\(cos^{-1}\frac{y}{b}\)
=
\(log_e (\frac{x}{n})^n\)
, then Ay
2
+By
1
+Cy=0 is possible : (where y
2
=
\(\frac{d^2y}{dx^2}\)
, y
1
=
\(\frac{dy}{dx}\)
)
WBJEE - 2023
WBJEE
Mathematics
limits of trigonometric functions
\(\lim_{x\rightarrow \infty}\)
{
\(x-\sqrt[n]{(x-a_1)(x-a_2)......(x-a_n)}\)
} where a
1
,a
2
,.....a
n
are positive rational numbers.The limit
WBJEE - 2023
WBJEE
Mathematics
Limits
Suppose f:R
\(\rightarrow\)
R be given by f(x)={
\(e^{(x^{10}-1)}+(x-1)^2sin\frac{1}{1-x},if\,\,\,x\neq1\)
}, then
WBJEE - 2023
WBJEE
Mathematics
Functions
The angle between a normal to the plane 2x-y+2z-1=0 and the X-axis is
WBJEE - 2023
WBJEE
Mathematics
Angle between a Line and a Plane
If y=log
n
x, where log
n
means log
e
log
e
log
e
.....(repeated n times), then xlogx log
2
x log
3
x....log
n-1
xlog
n
x
\(\frac{dy}{dx}\)
is equal to :
WBJEE - 2023
WBJEE
Mathematics
Logarithmic Differentiation
If the lines joining the focii of the ellipse
\(\frac{x^2}{a^2}+\frac{y^2}{b^2}=1\)
where a>b and an extremity of its minor axis is inclined at an angle 60°, then the eccentricity of the ellipse is
WBJEE - 2023
WBJEE
Mathematics
Conic sections
Let A(2 secθ, 3 tanθ) and B(2 secΦ, 3 tanΦ) where
\(\theta+\phi=\frac{\pi}{2}\)
be two parts of the hyperbola
\(\frac{x^2}{4}-\frac{y^2}{9}=1\)
. If (α,β) is the point of intersection of normals of the hyperbola at A and B, then β is equal to
WBJEE - 2023
WBJEE
Mathematics
Hyperbola
If the distance between the plane αx-2y+z=k and the plane containing the lines
\(\frac{x-1}{2}=\frac{y-2}{3}=\frac{z-3}{4}\)
and
\(\frac{x-2}{3}=\frac{y-3}{4}=\frac{z-4}{5}\)
is
\(\sqrt{6}\)
, then|k| is :
WBJEE - 2023
WBJEE
Mathematics
Angle between Two Planes
Let O be the vertex, Q be any point on the parabola x
2
=8y. If point P divides the line segment OQ internally in the ratio 1:3, then the locus of P is
WBJEE - 2023
WBJEE
Mathematics
Conic sections
ABC is an isosceles triangle with an inscribed circle with center O. Let P be the midpoint of BC. If AB=AC=15 and BC=10,then OP equals
WBJEE - 2023
WBJEE
Mathematics
Three Dimensional Geometry
If 4a
2
+9b
2
-c
2
+12ab=0, then the family of straight lines ax+by+c=0 is concurrent at
WBJEE - 2023
WBJEE
Mathematics
Straight lines
The straight lines x+2y-9=0, 3x+5y-5=0, and ax+by-1=0 are concurrent if the straight line 35x-22y+1=0 passes through the point:
WBJEE - 2023
WBJEE
Mathematics
Straight lines
Consider the trigonometric equation $ \tan(x) - \tan(y) = 0 $, where $x$ and $y$ are not odd multiples of $ \frac{\pi}{2} $. Then the solution of this equation is:
CUET (PG) - 2023
CUET (PG)
Mathematics
Trigonometric Equations
If
\( α,β,γ\)
are the cube roots of
\(-2\)
,then the value of
\(xα+yβ+zγ/xβ+yγ+zα\)
is (
\(x,y,z\)
are variables)
KEAM - 2023
KEAM
Mathematics
Complex numbers
Six coins tossed simultaneously then find the probability of getting at least 4 heads.
AP EAMCET - 2023
AP EAMCET
Mathematics
Probability
\(∫\dfrac{1}{cosx(sinx+2cosx)} dx=\)
KEAM - 2023
KEAM
Mathematics
Integral Calculus
Let
\(f:\R\rightarrow\R\)
be defined by
\(f(x) = \begin{cases} x & \text{if}\ x\leq1 \\ -x+2 & \text{if}\ x\gt1\end{cases}\)
Then
\(\int^{2}_{0}f(x)dx=\)
KEAM - 2023
KEAM
Mathematics
Integration
\(∫xlog(1+x^2)dx=\)
?
KEAM - 2023
KEAM
Mathematics
Integration by Parts
\(\int\frac{2\tan x+3}{\sin^2x+2\cos^2x}dx=\)
KEAM - 2023
KEAM
Mathematics
Integration
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