Let $A = \left( {\matrix{ {\cos \alpha } & { - \sin \alpha } \cr {\sin \alpha } & {\cos \alpha } \cr } } \right)$, ($\alpha $ $ \in $ R)
such that ${A^{32}} = \left( {\matrix{ 0 & { - 1} \cr 1 & 0 \cr } } \right)$ then a value of $\alpha $

1

The sum of all natural numbers $n$ such that $100

Topic: JEE Main 2019 (8 April Morning Shift)

2

Let $A$ and $B$ be two non-null events such that $A\subset B$. Then, which of the following statements is always correc…

Topic: JEE Main 2019 (8 April Morning Shift)

3

The sum of the solutions of the equation $\left|\sqrt{x}-2\right|+\sqrt{x},(\sqrt{x}-4)+2=0\ \ (x>0)$ is equal to:

Topic: JEE Main 2019 (8 April Morning Shift)

4

If $\alpha=\cos^{-1}\left(\dfrac{3}{5}\right),\ \beta=\tan^{-1}\left(\dfrac{1}{3}\right)$ where $0

Topic: JEE Main 2019 (8 April Morning Shift)

1

If $f(x)=\log_e\left(\dfrac{1-x}{1+x}\right),\ |x|

Topic: JEE Main 2019 (8 April Morning Shift)

2

Let $O(0,0)$ and $A(0,1)$ be two fixed points. Then the locus of a point $P$ such that the perimeter of $\triangle AOP$…

Topic: JEE Main 2019 (8 April Morning Shift)

3

If $S_1$ and $S_2$ are respectively the sets of local minimum and local maximum points of the function $f(x)=9x^4+12x^3…

Topic: JEE Main 2019 (8 April Morning Shift)

4

If $f(x)=\dfrac{2-x\cos x}{2+x\cos x}$ and $g(x)=\log_e x,\ (x>0)$, then the value of the integral $\displaystyle \int_…

Topic: JEE Main 2019 (8 April Morning Shift)

5

The area (in sq. units) of the region $A={(x,y)\in\mathbb{R}\times\mathbb{R}\mid 0\le x\le3,\ 0\le y\le4,\ y\le x^2+3x}…

Topic: JEE Main 2019 (8 April Morning Shift)

6

The mean and variance of seven observations are $8$ and $16$, respectively. If five of the observations are $2,4,10,12,…

Topic: JEE Main 2019 (8 April Morning Shift)

7

The length of the perpendicular from the point $(2,-1,4)$ on the straight line $\displaystyle \frac{x+3}{10}=\frac{y-2}…

Topic: JEE Main 2019 (8 April Morning Shift)

8

$\displaystyle \lim_{x\to0}\frac{\sin^{2}x}{\sqrt{2}-\sqrt{1+\cos x}}$ equals:

Topic: JEE Main 2019 (8 April Morning Shift)

9

A point on the straight line $3x+5y=15$ which is equidistant from the coordinate axes will lie only in:

Topic: JEE Main 2019 (8 April Morning Shift)

10

If $\alpha$ and $\beta$ be the roots of the equation $x^2-2x+2=0$, then the least value of $n$ for which $\left(\dfrac{…

Topic: JEE Main 2019 (8 April Morning Shift)