Recent questions tagged q8

Find the value of $\tan 22^{\large\circ}30'$

asked Apr 18, 2014 by sreemathi.v

1 answer

Find $\sin \large\frac{x}{2},$$\cos \large\frac{x}{2}$ and $\tan \large\frac{x}{2}$ when $\tan x=-\large\frac{4}{3}$,$x$ in quadrant II

asked Apr 18, 2014 by sreemathi.v

1 answer

Find the general solution for each of the following equation $\sec^22x=1-\tan 2x$

asked Apr 18, 2014 by sreemathi.v

1 answer

Prove : $\large\frac{\cos(\pi+x)\cos(-x)}{\sin (\pi-x)\cos(\large\frac{\pi}{2}+\normalsize x)}=$$\cot^2x$

asked Apr 17, 2014 by sreemathi.v

1 answer

Find the values of the trigonometric function $\tan \large\frac{19\pi}{3}$

asked Apr 17, 2014 by sreemathi.v

1 answer

Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $\large\frac{ax+b}{px^2+qx+r}$

asked Apr 12, 2014 by thanvigandhi_1

1 answer

Find the middle terms in the expansions of $\; \large ( \frac{x}{3}$$+9y \large)$$^{10}$

asked Apr 10, 2014 by balaji.thirumalai

1 answer

Using Binomial Theorem, evaluate $101^4$

asked Apr 10, 2014 by balaji.thirumalai

1 answer

Find the derivative of $ \large\frac{x^n-a^n}{x-a}$ for some constant $a$

asked Apr 9, 2014 by thanvigandhi_1

1 answer

An equilateral triangle is inscribed in the parabola $y^2 = 4 ax$, where one vertex isat the vertex of the parabola. Find the length of the side of the triangle.

asked Apr 8, 2014 by balaji.thirumalai

1 answer

Find the equations of the hyperbola satisfying the given conditions: Vertices: $(0,\pm 5)$, Foci: $(0,\pm 8)$

asked Apr 8, 2014 by balaji.thirumalai

1 answer

A student measured the length of a rod and wrote it as $3.50\; cm$.What instrument did he use to measure it?

asked Apr 7, 2014 by meena.p

1 answer

Evaluate the following limits $ \lim\limits_{x \to 3} \large\frac{x^4-81}{2x^2-5x-3}$

asked Apr 3, 2014 by thanvigandhi_1

1 answer

Find the coordinates of the foci, the vertices, the length of the major axis, the minor axis, the eccentricity and the length of the latus rectum of the ellipse $16x^2+y^2=16$

asked Apr 2, 2014 by balaji.thirumalai

1 answer

Find the equation of the parabola that satisfies the given conditions: Focus $(0,-3)$ and Directrix $y=3$

asked Apr 1, 2014 by balaji.thirumalai

1 answer

Find the centre and radius of the circle $x^2+y^2-8x+10y-12 = 0$

asked Apr 1, 2014 by balaji.thirumalai

1 answer

The sum of some terms of a G.P. is $315$ whose first term and the common ratio are $5$ and $2$ respectively. Find the last term and number of terms of the series.

asked Mar 30, 2014 by rvidyagovindarajan_1

1 answer

Amyloprotein is a polymer of

asked Mar 27, 2014 by thanvigandhi_1

1 answer

Find the sum of $n$ terms of the series whose $n^{th}$ term is given by $n(n+1)(n+4)$

asked Mar 24, 2014 by rvidyagovindarajan_1

1 answer

In the below reaction $Z$ is

asked Mar 21, 2014 by thanvigandhi_1

1 answer

Find the value of $a-2b$ if $\begin{bmatrix}a+4 & 3b\\8 & -6\end{bmatrix}=\begin{bmatrix}2a+2 & b+2\\8 & a-8b\end{bmatrix}\qquad$

asked Mar 21, 2014 by rvidyagovindarajan_1

1 answer

The ares of $Ag$ and $Cu$ are concentrated using their solubility in

asked Mar 17, 2014 by meena.p

1 answer

The equilibrium constant for a reaction\[\] $CO_2(g) + H_2(g) \rightleftharpoons CO(g) + H_2O(g) \: is \: 73$.\[\] Calculate the value of standard free energy change.

asked Mar 13, 2014 by thanvigandhi_1

1 answer

The bond dissociation energy of $B-F$ in $BF_3$ in 646KJ$mol^{-1}$ whereas that of C-F in $CF_4$ is 515KJ$mol^{-1}$. The correct reason for higher B-F bond dissociation energy as compared to that of C-F is

asked Mar 10, 2014 by sreemathi.v

1 answer

Which of the following is not a condensation polymer?

asked Mar 6, 2014 by thanvigandhi_1

2 answers

The correct order of base strength of the three isomers of methoxy aniline is

asked Feb 28, 2014 by sreemathi.v

1 answer

Find the sum upto $n$ terms of the G.P. $\sqrt 7,\sqrt {21},3\sqrt 7,.......$

asked Feb 26, 2014 by rvidyagovindarajan_1

1 answer

If the sum of $n$ terms of an $A.P.$ is $(pn+qn^2)$ where $p$ and $q$ are constants, then find the common difference $d$.

asked Feb 22, 2014 by rvidyagovindarajan_1

1 answer

Which of the following has the highest nucleophilicity

asked Feb 20, 2014 by meena.p

1 answer

Which of the following has the highest nucleophilicity

asked Feb 20, 2014 by meena.p

1 answer

Refer the below :

asked Feb 19, 2014 by sreemathi.v

1 answer

Find $a_7$ if $a_n=\large\frac{n^2}{2^{n}}$

asked Feb 18, 2014 by rvidyagovindarajan_1

1 answer

For an ideal gas , number of moles per litre in terms of its pressure P , gas constant R and temperature T is

asked Feb 12, 2014 by sharmaaparna1

1 answer

Sketch the region and find the area bounded between $y=\sqrt {5-x^2}$ and $y=|x-1|$ using integration.

asked Feb 10, 2014 by rvidyagovindarajan_1

1 answer

Find the equation of straight line passing through $(at_1,\large\frac{a}{t_1})$ & $(at_2,\large\frac{a}{t_2})$?

asked Feb 4, 2014 by sreemathi.v

1 answer

General solution of differential equation: $\large\frac{xdy}{x^2+y^2} $$+\bigg(1- \large\frac{y}{x^2+y^2} \bigg)$$dx=0$ is

asked Feb 3, 2014 by meena.p

1 answer

$ \text{If } \begin{vmatrix} 2 x&5 \\ 8&x \end{vmatrix} = \begin{vmatrix} 4&5 \\ 8&3 \end{vmatrix},then\; x\; is\; equal\; to$

asked Jan 31, 2014 by rvidyagovindarajan_1

1 answer

The formula of "nitrosyl" group

asked Jan 31, 2014 by sreemathi.v

1 answer

The diffusion current in p-n junction is due to

asked Jan 27, 2014 by meena.p

1 answer

The alkali metal with lowest melting point is

asked Jan 27, 2014 by sreemathi.v

1 answer

Let p be the statement “x is an irrational number”, q be the statement “y is a transcendental number” and r be the statement “x is a rational number iff y is a transcendental number”. \[\] S1 : r is equivalent to either q or p \[\] S2 : r is equivalent to $ ^{\sim}(p \leftrightarrow \: ^{\sim}q)$

asked Jan 22, 2014 by thanvigandhi_1

1 answer

Ratio of the Bohr radius of protium ,deuterium and tritium atom is

asked Jan 22, 2014 by sreemathi.v

1 answer

Gradual warming of the atmosphere due to trapping of radiation of long wavelength is called

asked Jan 20, 2014 by sreemathi.v

1 answer

Which is logically equivalent to "If today is Sunday, Matt cannot play hockey."?

asked Jan 18, 2014 by thanvigandhi_1

1 answer

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