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Recent questions tagged medium

Zig-zag arrangement of flowers on a common axis represents :-

asked May 5, 2014 by sreemathi.v

1 answer

Catkin is a type of

asked May 5, 2014 by sreemathi.v

1 answer

A monocots could be distinguished from dicots by

asked May 5, 2014 by sreemathi.v

1 answer

Rhizome of ginger is a modification of stem because :-

asked May 5, 2014 by sreemathi.v

1 answer

Edible part of turnip is :-

asked May 5, 2014 by sreemathi.v

2 answers

Roots associated with nitrogen fixing bacteria are :-

asked May 5, 2014 by sreemathi.v

1 answer

Boltzmann curve is given below :

asked May 2, 2014 by meena.p

1 answer

The reason why $Cp$ is greater than $Cv$ is _______

asked May 2, 2014 by meena.p

1 answer

The graph of PV v/s T is plotted for $Co_2,H_2$ and $N_2$ samples of equal masses Then the correct statement is

asked May 2, 2014 by meena.p

1 answer

If a square matrix A is such that $AA^T=I=A^TA$ then $|A|$ is equal to

asked Apr 25, 2014 by sreemathi.v

1 answer

If $A$ is square matrix of order $n\times n$ then adj(adj(A)) is equal to

asked Apr 25, 2014 by sreemathi.v

1 answer

If $A,B$ are two square matrices such that $AB=A$ and $BA=B$ then $A$ and $B$ are

asked Apr 25, 2014 by sreemathi.v

1 answer

If $A$ is orthogonal matrix then

asked Apr 25, 2014 by sreemathi.v

1 answer

The number of right inverse for the matrix $\begin{bmatrix}1&-1&2\\2&-1&1\end{bmatrix}$

asked Apr 25, 2014 by sreemathi.v

1 answer

If $A$ is an invertible matrix and B is a matrix then

asked Apr 24, 2014 by sreemathi.v

1 answer

Let $C=\begin{bmatrix}C_{11}&C_{12}\\C_{21}&C_{22}\end{bmatrix}$ be a $2\times 2$ matrix and there exist $2\times 2$ matrices $A$ and $B$ such that $C=AB-BA$ then

asked Apr 24, 2014 by sreemathi.v

1 answer

The value of $\theta$ in the first quadrant satisfying the equation $\begin{vmatrix}1+\cos^2\theta&\sin^2\theta&4\sin 4\theta\\\cos^2\theta&1+\sin^2\theta&4\sin4\theta\\\cos^2\theta&\sin^2\theta&1+4\sin 4\theta\end{vmatrix}=0$ is

asked Apr 23, 2014 by sreemathi.v

1 answer

If $A=\begin{bmatrix}1&2\\3&-5\end{bmatrix}$ then $A^{-1}$=

asked Apr 23, 2014 by sreemathi.v

1 answer

If $x^ay^b=e^m,x^cy^d=e^n$ $\Delta_1=\begin{vmatrix}m&b\\n&d\end{vmatrix}$,$\Delta_2=\begin{vmatrix}a&m\\c&n\end{vmatrix}$,$\Delta_3=\begin{vmatrix}a&b\\c&d\end{vmatrix}$ then the values of $x$ and $y$ are respectively

asked Apr 23, 2014 by sreemathi.v

1 answer

If 5 is one root of the equation $\begin{vmatrix}x&3&7\\2&x&-2\\7&8&x\end{vmatrix}=0$ then the other two roots of the equation are

asked Apr 23, 2014 by sreemathi.v

1 answer

If $A=\begin{bmatrix}0&2\\3&-4\end{bmatrix}$ and $kA=\begin{bmatrix}0&3a\\2b&24\end{bmatrix}$ then the values of $k,a,b$ are respectively

asked Apr 23, 2014 by sreemathi.v

1 answer

If $\omega$ is cube root of unity then $\Delta=\begin{vmatrix}x+1&\omega&\omega^2\\\omega&x+\omega^2&1\\\omega^2&1&x+\omega^2\end{vmatrix}=$

asked Apr 23, 2014 by sreemathi.v

1 answer

If $A=\begin{bmatrix}2&0&0\\0&2&0\\0&0&2\end{bmatrix}$ then $A^5=$

asked Apr 23, 2014 by sreemathi.v

1 answer

If $A=\begin{bmatrix}1&\tan\large\frac{\theta}{2}\\-\tan\large\frac{\theta}{2}&1\end{bmatrix}$ and $AB=I$ then $B$=

asked Apr 23, 2014 by sreemathi.v

1 answer

If $A$ and $B$ are two matrices such that $AB=B$ and $BA=A$ then $A^2+B^2=$

asked Apr 23, 2014 by sreemathi.v

1 answer

If A is singular matrix then adj.A is

asked Apr 23, 2014 by sreemathi.v

1 answer

From the matrix equation $AB=AC$ we can conclude $B=C$ provided.

asked Apr 23, 2014 by sreemathi.v

1 answer

The roots of the equation $\begin{vmatrix}x-1&1&1\\1&x-1&1\\1&1&x-1\end{vmatrix}=0$ are

asked Apr 23, 2014 by sreemathi.v

1 answer

If a matrix A is such that $3A^3+2A^2+5A+I=0$ then its inverse is

asked Apr 23, 2014 by sreemathi.v

1 answer

If $A=\begin{bmatrix}0&1&0\\0&0&1\\1&-1&0\end{bmatrix}$ then $A^3+A$ equals

asked Apr 23, 2014 by sreemathi.v

1 answer

If $A$ and $B$ are square matrices of the same order and A is non-singular then for a positive integer n,$(A^{-1}BA)^n$ is equal to

asked Apr 23, 2014 by sreemathi.v

1 answer

If $\Delta=\begin{vmatrix} 1+x_1y_1&1+x_1y_2&1+x_1y_3\\1+x_2y_1&1+x_2y_2&1+x_2y_3\\1+x_3y_1&1+x_3y_2&1+x_3y_3\end{vmatrix}$ then $\Delta$ is

asked Apr 22, 2014 by sreemathi.v

1 answer

Which one of the graphs below best illustrates the relationship between internal energy U and temperature T of the gas in K ?

asked Apr 22, 2014 by yamini.v

1 answer

If the system of equations $x+ay+az=0,bx+y+bz=0$ and $cx+cy+z=0$ where $a,b,c$ are non-zero ,non unity has a non-trivial solution then the value of $\large\frac{a}{1-a}+\frac{b}{1-b}+\frac{c}{1-c}$ is

asked Apr 22, 2014 by sreemathi.v

1 answer

$\;C_{p}\;$ and $\;C_{v}\;$ denote the molar specific heat capacities of a gas at constant pressure and constant volume respectively . Then

asked Apr 22, 2014 by yamini.v

1 answer

In a triangle ABC $\begin{vmatrix} a^2& b\sin A & C\sin A\\b\sin A&1&\cos(B-C)\\C\sin A&\cos (B-C) & 1\end{vmatrix}$ equals

asked Apr 22, 2014 by sreemathi.v

1 answer

If $A,B,C$ are angles of a triangle and $\begin{vmatrix} 1&1&1\\1+\sin A&1+\sin B&1+\sin C\\\sin A+\sin ^2A&\sin B+\sin^2B& \sin C+\sin^2C\end{vmatrix}=0$

asked Apr 22, 2014 by sreemathi.v

1 answer

If $F(\alpha)=\begin{bmatrix}\cos \alpha&-\sin \alpha&0\\\sin \alpha&\cos \alpha&0\\0&0&1\end{bmatrix}$ $\alpha \in R$ then $[F(\alpha)]^{-1}$ is equal to

asked Apr 22, 2014 by sreemathi.v

1 answer

The repeated factor of $\begin{vmatrix}y+z&x&y\\z+x& z&x\\x+y& y&z\end{vmatrix}$ is

asked Apr 22, 2014 by sreemathi.v

1 answer

The value of $\begin{vmatrix}1&a&a^2-bc\\1&b& b^2-ca\\1&c&c^2-ab\end{vmatrix}$ is

asked Apr 22, 2014 by sreemathi.v

1 answer

If $A=\begin{bmatrix}\large\frac{1}{a}&a^2&bc\\\large\frac{1}{b}&b^2&ca\\\large\frac{1}{c}&c^2&ab\end{bmatrix}$ then $|A|$ is

asked Apr 22, 2014 by sreemathi.v

1 answer

If $a,b,c$ are non zero real numbers,then $\begin{vmatrix}bc&ca&ab\\ca&ab&bc\\ab&bc&ca\end{vmatrix}$ vanishes when

asked Apr 22, 2014 by sreemathi.v

1 answer

Find the value of $\tan(\large\frac{-25\pi}{3})$

asked Apr 22, 2014 by sreemathi.v

1 answer

If $\cos x=-\large\frac{\sqrt{15}}{4}$ and $\large\frac{\pi}{2}$$ \lt x $$ \lt \pi$ ,find the value of $\sin x$

asked Apr 22, 2014 by sreemathi.v

1 answer

Evaluate $\lim \limits _{x \to \pi/6} \large\frac{(\sqrt 3 \sin x - \cos x)}{(x-\pi/6)}$

asked Apr 22, 2014 by meena.p

1 answer

Evaluate $\lim \limits_{x \to 0} \bigg(\large\frac{x^3 \cot x}{1- \cos x} \bigg)$

asked Apr 22, 2014 by meena.p

1 answer

Evaluate $\lim \limits_{x \to 2} \bigg( \large\frac{e^x-e^2}{x-2} \bigg)$

asked Apr 22, 2014 by meena.p

1 answer

If for real values of $x\cos\theta=x+\large\frac{1}{x}$,then

asked Apr 22, 2014 by sreemathi.v

2 answers

If vertex and focus of hyperbola are $(2,3)$ and $(6,3)$ respectively and eccentricity e of the hyperbola is 2 then equation of the hyperbola is

asked Apr 21, 2014 by meena.p

1 answer

The eccentricity of the hyperbola $9y^2 -4x^2=36$ is

asked Apr 21, 2014 by meena.p

1 answer

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