Recent questions tagged mar-2006

Find the square root of $(-8-6i)$

asked Jun 7, 2013 by sreemathi.v

1 answer

Var $(4X+3)$ is

asked May 28, 2013 by poojasapani_1

1 answer

If $f(x)=\large\frac{A}{\pi}\frac{1}{16+x^{2'}}$$-\infty<x<\infty$\[\]is a p.d.f of a continuous random variable $X,$ then the value of $A$ is

asked May 28, 2013 by poojasapani_1

1 answer

The value of $[3]+11([5]+11[6])$ is

asked May 27, 2013 by poojasapani_1

1 answer

$p\leftrightarrow q$ is equivalent to

asked May 24, 2013 by poojasapani_1

1 answer

Which of the following is a contradiction ?

asked May 24, 2013 by poojasapani_1

1 answer

The P.L of $(3D^{2}+D-14)y=13e^{2x}$ is

asked May 24, 2013 by poojasapani_1

1 answer

The integrating factor of the differential equation $\large\frac{dy}{dx}$$+py=Q$ is

asked May 23, 2013 by poojasapani_1

1 answer

The differential equation $\large\left(\frac{dx}{dy}\right)^{2}$$+5y^{1/3}=x$ is

asked May 22, 2013 by poojasapani_1

1 answer

The volume, When the curve $y=\sqrt{3+x^{2}}$ from $x=0$ to $x=4$ is rotated about $x$-axis is

asked May 22, 2013 by poojasapani_1

1 answer

The area between the ellipse $\large\frac{x^{2}}{a^{2}}+\frac{y^{2}}{b^{2}}$=$1$ and its auxillary circle is

asked May 22, 2013 by poojasapani_1

1 answer

The value of $\int\limits_{0}^{1}x(1-x)^{4}dx$ is

asked May 21, 2013 by poojasapani_1

1 answer

The curve $9y^{2}=x^{2}(4-x^{2})$ is symmetrical about

asked May 21, 2013 by poojasapani_1

1 answer

The percentage error in the $11^{th}$ root of the number is approximately ______ times the percentage error in $28$.

asked May 21, 2013 by poojasapani_1

1 answer

In a semi circle of diameter $4$cm a rectangle is to be inscribed . The maximum area of the rectangle is

asked May 18, 2013 by poojasapani_1

1 answer

The value of $c$ in Rolle's Theorem for the function $f(x)=\cos\large\frac{x}{2}$ on $[\pi,3]$ is

asked May 17, 2013 by poojasapani_1

1 answer

The slope of the normal to the curve $y=3x^{2}$ at the point whose $x$ coordinate is $2$ is

asked May 15, 2013 by poojasapani_1

1 answer

One of the foci of the rectangular hyperbola $xy=18$ is

asked May 14, 2013 by poojasapani_1

1 answer

The directrices of the hyperbola $x^{2}-4(y-3)^{2}=16$ are

asked May 14, 2013 by poojasapani_1

1 answer

The sum of the distance of any point on the ellipse $ 4x^{2}+9y^{2}=36 $ from $(\sqrt{5},0) and (-\sqrt{5} ,0) $ is

asked May 13, 2013 by poojasapani_1

1 answer

The line $ 2x+3y+9=0$ touches the parabola $y^{2}=8x$ at the point

asked May 13, 2013 by poojasapani_1

1 answer

If $\omega$ is a cube root of unity then the value of $(1-\omega+\omega^{2})^{4}+(1+\omega-\omega^{2})^{4}$ is

asked May 13, 2013 by poojasapani_1

1 answer

The value of $i+i^{22}+i^{23}+i^{24}+i^{25}$ is

asked May 12, 2013 by poojasapani_1

1 answer

The polar form of the complex number $(i^{25})^{3}$ is

asked May 12, 2013 by poojasapani_1

1 answer

The work done by the force $\overrightarrow {f}=\overrightarrow{i}+\overrightarrow{j}+\overrightarrow{k}$ acting on a particle, if the particle is displaced from $A(3 , 3 , 3 )$ to the point $B(4 , 4 , 4 ) $ is

asked May 11, 2013 by poojasapani_1

1 answer

If$[\overrightarrow{a}\times\overrightarrow{b},\overrightarrow{b}\times\overrightarrow{c},\overrightarrow{c}\times\overrightarrow{a}]=64$ then $[\overrightarrow{a},\overrightarrow{b},\overrightarrow{c}]$ is

asked May 10, 2013 by poojasapani_1

1 answer

If $|\overrightarrow{a+b}|=|\overrightarrow{a-b}|$ then

asked May 9, 2013 by poojasapani_1

1 answer

If the equation $-2x+y+z=i\;;x-2y+z=m\;;x+y-2z=n$ such that $i+m+n=0,$ then the system has

asked May 8, 2013 by poojasapani_1

1 answer

Inverse of $\begin{bmatrix}2& -1 \\-5 & 3 \end{bmatrix}$ is

asked May 7, 2013 by poojasapani_1

1 answer

If $A$ is a square matrix of order $n$ then |adj$A$| is

asked May 7, 2013 by poojasapani_1

1 answer

Find the intervals on which $f$ is increasing or decreasing. $f(x)= x^{3}-3x+1$

asked May 4, 2013 by poojasapani_1

1 answer

Find the common area enclosed by the parabolas $4y^{2}=9x$ and $3x^{2}=16y$

asked Apr 28, 2013 by poojasapani_1

1 answer