Recent questions tagged q68

Ctenophores have the following symmetry

asked Oct 30, 2013 by thanvigandhi_1

1 answer

A solution is 0.5m in $MgSO_4$,0.1M $Alcl_3$ and 0.2M in $(NH_4)_2SO_4.$The total ionic strength is

asked Oct 29, 2013 by sreemathi.v

1 answer

The circumference of a circle is measured as 56 cm with an error 0.02 cm. The percentage error in its area is

asked Oct 28, 2013 by meena.p

1 answer

Paedomorphosis is seen in

asked Oct 18, 2013 by thanvigandhi_1

1 answer

If m and M respectively denote the minimum and maximum of $f(x)=(x-1)^2+3$ for $x \in [-3,1]$ then the ordered pair $(n,M)$-

asked Oct 18, 2013 by meena.p

1 answer

$y=e^{a \sin ^{-1}x}=>(1-x^2)y_{n+2}-(2n+1)xy_{n+1}=$

asked Oct 10, 2013 by meena.p

1 answer

If the angles $A,B,C$ of a $\Delta$le are in arithmetic progression and if $a,b$ and $c$ denote the lengths of the sides opposite to $A,B$ and $C$ respectively,then the value of the expression $\large\frac{a}{c}$$\sin 2C+\large\frac{c}{a}$$\sin 2A$ is

asked Oct 10, 2013 by sreemathi.v

1 answer

Of the following statements about 'antibodies' and 'antigens' choose the correct set,

asked Oct 6, 2013 by thanvigandhi_1

1 answer

$ y= \sin (m \sin ^{-1} x) =>(1-x^2)y_2-xy_1= $ (Here $y_n$ denotes $\large\frac{d^ny}{dx^n}$)

asked Sep 27, 2013 by meena.p

1 answer

Aline segment $AM=a$ moves in the $XOY$ plane such that $AM$ is parallel to the $x-axis$. If A moves along the circle $x^2+y^2=a^2$, then the locus of M is

asked Sep 23, 2013 by meena.p

1 answer

$\cos ^{-1} \bigg(\large\frac{y}{b} \bigg)$$=2 \log \bigg(\large\frac{x}{2}\bigg),$$ x > 0=>x^2 \large\frac{d^2y}{dx^2}$$+x \large\frac{dy}{dx}=$

asked Sep 17, 2013 by meena.p

1 answer

Three particles of equal mass m are situated at verticles of a equilateral triangle of side l. What should be velocity of each particle so that they move on a circular path without changing l

asked Aug 23, 2013 by meena.p

1 answer

A particle moves with velocity $v= (5 \hat i -3 \hat j+6 \hat k) m/s$ under the influence of a constant force $\hat F=(10 \hat i+10 \hat j+20 \hat k)N$. The instantaneous power applied to the particle is

asked Aug 6, 2013 by meena.p

1 answer

In the figure shown acceleration of A is $a_A=15 \hat i+15 \hat j$ then the acceleration of B is

asked Jul 12, 2013 by meena.p

2 answers

A swimmer crosses a flowing stream of width 'w' to and fro in time $t_1$. The time taken to cross the same distance up and down the stream in $t_2.$ If $t_3$ is the time the swimmer would take to swim a distance $2w$ in still water. Then

asked Jun 29, 2013 by meena.p

1 answer

The area of the region bounded by the graph of $y=\sin x$ and $y=\cos x $ between $x=0$ and $x=\large\frac{\pi}{4}$ is

asked May 22, 2013 by poojasapani_1

1 answer

$\large\frac{1+e^{-i\theta}}{1+e^{i\theta}}$=

asked May 12, 2013 by poojasapani_1

1 answer

Evaluate:\[\int _0 ^ 2 | x^2+2x-3|dx\]

asked Feb 3, 2013 by meena.p

0 answers

Find whether $ f(x)=\cos (2x+\pi/4)\:is\:increasing\:or\:decreasing\:in\:(\frac{3\pi}{8},\frac{5\pi}{8})$ .

asked Jan 29, 2013 by meena.p

0 answers

The order and degree of the differential equation $\bigg[1+\bigg(\large\frac{dy}{dx}\bigg)^2\bigg]=\bigg(\large\frac{d^2y}{dx^2}\bigg)$ are

asked Jan 20, 2013 by sreemathi.v

1 answer

If A and B are such events that $P(A)>o$ and $P(B)\neq 1$,then P(A|B) equals

asked Jan 10, 2013 by sreemathi.v

1 answer

Verify the Rolle's theorem for the function $f(x)=x(x+3)e^{\large-x/2}\;in\;[-3,0]$

asked Jan 2, 2013 by sreemathi.v

1 answer

________________ matrix is both symmetric and skew symmetric matrix.

asked Dec 24, 2012 by sreemathi.v

1 answer

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