Recent questions tagged q61

$f(x) =e^x \sin x,$ then $f^{(6)} (x) $ is equal to :

asked Nov 6, 2013 by meena.p

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Vermicompost produced by earthworm contains Nitrogen (N) and Phosphorus (P) in this ratio :

asked Oct 30, 2013 by thanvigandhi_1

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Amount of oxygen required for combustion of 1kg of a mixture of butane and isobutane is

asked Oct 28, 2013 by sreemathi.v

1 answer

If $f(x)= \left\{ \begin{array}{1 1} x-5, & \quad for\; x \leq 1 \\ 4x^2-9, & \quad for\;1 < x < 2 \\ 3x+4, &\quad for\; x \geq 2 \end{array} \right.$ then $f'(2^{+})$ is equal to

asked Oct 26, 2013 by meena.p

1 answer

The secretions of these accessory glands in urethra of male Rabbit neutralizes the urinary residue and vaginal acidity

asked Oct 17, 2013 by thanvigandhi_1

1 answer

If $f:\Re \to \Re$ is defined by $f(x) =[x-3]+| x-4 |$ for $ x \in \Re$ then $\lim \limits_{x \to 3^-} f(x)=$

asked Oct 17, 2013 by meena.p

1 answer

The image of the point $(3,2,1)$ in the plane $2x-y+3z=7$ is :

asked Oct 10, 2013 by meena.p

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Evaluate $\sin(1560^{\large\circ})$

asked Oct 9, 2013 by sreemathi.v

1 answer

Match the following

asked Oct 6, 2013 by thanvigandhi_1

1 answer

A plane meets the coordinate axes at A,B,C so that the centroid of the triangle ABC is (1,2,4). Then the equation of the plane is :

asked Sep 27, 2013 by meena.p

1 answer

The number of points $P(x,y)$ with natural numbers as coordinates that the inside the quadrilateral formed by the lines $2x+y=2,y=0$ and $x+y=5 $ is

asked Sep 23, 2013 by meena.p

1 answer

A plane passing through $(-1,2,3)$ and whose normal makes equal angles with the coordinate axes is

asked Sep 16, 2013 by meena.p

1 answer

The gravitational field due to mass distribution is $ E= k/x^3$ in the x direction where k is a constant. Taking gravitational potential to be zero at infinity, its value at a distance x is

asked Aug 23, 2013 by meena.p

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A particle of mass m slides a distance d down a plane inclined at $\theta$ to the horizontal. The work done by the normal reaction R is

asked Aug 6, 2013 by meena.p

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The graph shows the displacement of a particle going along x-axis as a function of time. The force acting on the particle is zero in the region

asked Jul 11, 2013 by meena.p

1 answer

The value of $\int\limits_{0}^{\pi/2}\large\frac{\sin x-\cos x}{1+\sin x \cos x}$$dx$ is

asked May 21, 2013 by poojasapani_1

1 answer

If $a=3+i $ and $z=2-3i$ then the points on the Argand diagram representing $az , 3az $ and $-az $ are

asked May 12, 2013 by poojasapani_1

1 answer

Evaluate:\[\int _ {\pi/3}^{\pi/2} \frac{ \sqrt {1+\cos x}}{(1-\cos x)^{7/2}}dx\]

asked Feb 3, 2013 by meena.p

0 answers

The volume of a spherical balloon is increasing at the rate of $25\; cm^3$/sec. Find the rate of change of its surface area at the instant when the radius is 5 cm.

asked Jan 29, 2013 by meena.p

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The general solution of $\large\frac{dy}{dx}$$=2xe^{x^2-y}$ is: \[(A)\;e^{x^2-y}=c \quad (B)\;e^{-y}+e^{x^2}=c \quad(C)\;e^y=e^{x^2}+c \quad (D)\;e^{x^2}+y=c\]

asked Jan 19, 2013 by sreemathi.v

1 answer

If $\Large \int\frac{1}{1+4x^2}$$dx=\large\frac{\pi}{8},$then a=____________.

asked Jan 15, 2013 by sreemathi.v

1 answer

The equation of normal to the curve y=tan x at (0,0) is___________.

asked Jan 12, 2013 by sreemathi.v

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If $y=(\cos x)^{\Large(\cos x)^{(\Large \cos x)..........\infty.}},$show that $\large {\frac{dy}{dx}=\frac{y^2\tan x}{ylog\cos x-1}}$

asked Jan 2, 2013 by sreemathi.v

1 answer

The matrix $\begin{bmatrix}0 & 5 & 8\\5 & 0 & 12\\8 & 12 & 0\end{bmatrix}$ is

asked Dec 24, 2012 by sreemathi.v

1 answer

True or False: Every function is invertible.

asked Dec 20, 2012 by sreemathi.v

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