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Recent questions tagged q80

The value of $\cot (cosec^{-1}\large\frac{5}{3}$$+\tan^{-1}\large\frac{2}{3})$ is

asked Oct 11, 2013 by sreemathi.v

1 answer

The differential equation of the family $y=ae^x+bx\; e^x+cx^2\;e^x$ of curves, where $a,b,c$ are arbitrary constants, is :

asked Oct 11, 2013 by meena.p

1 answer

Match the following

asked Oct 8, 2013 by thanvigandhi_1

1 answer

A family of curves has the differential equation $xy \large\frac{dy}{dx}$$=2y^2-x^2$. Then the family of curves is :

asked Sep 29, 2013 by meena.p

1 answer

The radius of the circle given by $x^2+y^2+z^2+2x-2y-4z-19=0=x+2y+2z+7,$ is

asked Sep 23, 2013 by meena.p

1 answer

The solution of the differential equation $\large\frac{dy}{dx}$$-2y \tan 2x =e^x\;sec 2x$ is :

asked Sep 17, 2013 by meena.p

1 answer

Mass density of a solid sphere is $\rho$. Radius of sphere is R. The gravitational field at a distance $r$ from the center of the sphere inside it is

asked Aug 26, 2013 by meena.p

1 answer

A block of mass $0.50\;kg$ is moving with speed of $2.00 m/s$ on a smooth surface. It strikes another mass of $1.00 kg$ at rest and they move together as a single body. The energy loss during collision is

asked Aug 7, 2013 by meena.p

1 answer

A body of 0.02 kg falling from height 5 m into a pile of sand.The body penetrates the sand a distance of 5cm before stopping what force has the sand exerted on the body?

asked Jul 12, 2013 by meena.p

1 answer

If $x^my^n=(x+y)^{m+n}$,Prove that $(ii)\;\large\frac{d^2y}{dx^2}=$$0$

asked Jul 3, 2013 by sreemathi.v

1 answer

If $ \cos x $ is an integrating factor of the differential equation $\large\frac{dy}{dx}$$+Py=Q$ then $P$=

asked May 22, 2013 by poojasapani_1

1 answer

If$ -i+3 $ is a root of $x^{2}-6x+k=0 $ then the value of $k$ is

asked May 13, 2013 by poojasapani_1

1 answer

Evaluate:$\int \limits_0^ {\pi/4} \sin 2x \sin 3x dx$

asked Feb 4, 2013 by meena.p

1 answer

Find the appropriate change in volume of a cube when side increases by 1%.

asked Jan 30, 2013 by meena.p

0 answers

A flash light has 8 batteries out of which 3 are dead.If two batteries are selected without replacement and tested,the probability that both are dead is

asked Jan 10, 2013 by sreemathi.v

1 answer

If $x^my^n=(x+y)^{m+n}$,Prove that $(i)\;\large\frac{dy}{dx}=\frac{y}{x}$

asked Jan 2, 2013 by sreemathi.v

1 answer

If A and B are symmetric matrices of same order, then AB is symmetric if and only if ___________ .

asked Dec 24, 2012 by sreemathi.v

1 answer

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