Recent questions tagged q14

In what ratio, the line joining (–1, 1) and (5, 7) is divided by the line x + y = 4?

asked May 21, 2014 by thanvigandhi_1

1 answer

The number of words of four letters containing equal number of vowels and consonants ,repetition allowed is

asked May 19, 2014 by sreemathi.v

1 answer

A box contain two white,three black and four red balls. In how many ways can three balls be drawn from the box,if atleast one black ball is to be includedin the draw

asked May 15, 2014 by sreemathi.v

1 answer

Find the coordinates of the foot of perpendicular from the point (-1,3) to the line $3x-4y-16=0$

asked May 13, 2014 by thanvigandhi_1

1 answer

Prove the following statement by the principle of mathematical induction : \[\] $2+4+6+...+2n=n^2+n$ for all natural numbers $n$.

asked May 5, 2014 by thanvigandhi_1

0 answers

Find the equation of the tangent to the curve $\sqrt x +\sqrt y =a $ at the point $\bigg( \large\frac{a^2}{4},\frac{a^2}{4} \bigg)$

asked May 1, 2014 by meena.p

0 answers

Prove the following by using the principle of mathematical induction for all $n \in N$ \[\] $ \bigg( 1+\large\frac{1}{1} \bigg)$$\bigg( 1+\large\frac{1}{2} \bigg)$$\bigg( 1+\large\frac{1}{3} \bigg)$$...\bigg( 1+\large\frac{1}{n} \bigg)$$=(n+1)$

asked Apr 30, 2014 by thanvigandhi_1

1 answer

If $\tan \theta=\large\frac{\sin \alpha-\cos\alpha}{\sin \alpha+\cos\alpha}$ then show that $\sin\alpha+\cos\alpha=\sqrt 2\cos\theta$

asked Apr 18, 2014 by sreemathi.v

1 answer

Prove : $\sin 2x+2\sin 4x+\sin 6x=4\cos^2x\sin 4x$

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 ) $\sin (x+a)$

asked Apr 14, 2014 by thanvigandhi_1

1 answer

Find the equations of the hyperbola satisfying the given conditions: Vertices : $(\pm 7 )$, $e = \large\frac{4}{3}$

asked Apr 8, 2014 by balaji.thirumalai

1 answer

During the propagation of electromagnetic waves in a medium

asked Apr 7, 2014 by meena.p

1 answer

Evaluate the following limits \[\] $ \lim\limits_{ x \to 0} \large\frac{ \sin \: ax}{ \sin \: bx}, $$ a , b \neq 0$

asked Apr 3, 2014 by thanvigandhi_1

1 answer

Find the equation of an ellipse that satisfies the following conditions: Ends of Major Axis $\;(0, \pm\sqrt 5)$, Ends of Minor Axis $\;(\pm 1,0)$

asked Apr 2, 2014 by balaji.thirumalai

1 answer

Find the equation of the circle with centre $(2,2)$ and passing through the point $(4,5)$

asked Apr 1, 2014 by balaji.thirumalai

1 answer

Let $S$ be the sum, $P$ the product and $R$ the sum of reciprocals of $n$ terms of a G.P. Prove that $P^2R^n=S^n$

asked Mar 31, 2014 by rvidyagovindarajan_1

1 answer

Which disaccharide is present in milk?

asked Mar 27, 2014 by thanvigandhi_1

1 answer

Aniline was diazotized and was subsequetly reduced with tin (11)chloride and Hcl.the product formed is

asked Mar 21, 2014 by thanvigandhi_1

1 answer

Element carbon is most likely to reduce. $Fe_2O_3$ in which of the following temp ranges

asked Mar 17, 2014 by meena.p

1 answer

A minus sign of the free energy change denotes that

asked Mar 15, 2014 by thanvigandhi_1

1 answer

In which one of the following pairs,the species have similar geometry

asked Mar 10, 2014 by sreemathi.v

1 answer

Thiokol is ?

asked Mar 6, 2014 by thanvigandhi_1

1 answer

The major product obtained on heating of $CH_3CH_2CH_2CH_2N^{\oplus}(CH_3)_3OH^{\ominus}$

asked Feb 28, 2014 by sreemathi.v

1 answer

The sum of first three terms of a G.P. is $16$ and the sum of next three terms is $128$. Find the $1^{st}$ term, common ratio and the sum of $n$ terms of the G.P.

asked Feb 26, 2014 by rvidyagovindarajan_1

1 answer

Insert $5$ numbers between $8\:and\:26$ such that the resulting sequence is an $A.P.$

asked Feb 23, 2014 by rvidyagovindarajan_1

1 answer

The below reaction involves

asked Feb 19, 2014 by sreemathi.v

1 answer

The Fibanocci sequence is defined by $1=a_1=a_2\:\:and\:\:a_n=a_{n-1}+a_{n-2}\:\:for\:n>2$ Find $\large\frac{a_{n+1}}{a_n}$, for $n=1,2,3,4,5$

asked Feb 18, 2014 by rvidyagovindarajan_1

1 answer

The Compressibility factor for an ideal gas is

asked Feb 13, 2014 by sharmaaparna1

1 answer

Find the distance between two points (5,6) & (10,12)?

asked Feb 4, 2014 by sreemathi.v

1 answer

Solve: $xe^y dy -e^y dx=0$

asked Feb 3, 2014 by meena.p

1 answer

In metallurgy the metal used to displace silver pom its cyano complex

asked Jan 31, 2014 by sreemathi.v

1 answer

Electrical conductivity of pure germanium can be increased by 1) increasing the temperature 2) doping with donor impurities 3) radiation with ultra violet rays. 4) doping with acceptor impurities

asked Jan 27, 2014 by meena.p

1 answer

The alkali metal needed for the growth of the plants is

asked Jan 27, 2014 by sreemathi.v

1 answer

The proposition $ (p \Rightarrow \: ^{\sim}p) \wedge (^{\sim}p \Rightarrow p)$ is a

asked Jan 23, 2014 by thanvigandhi_1

1 answer

Which isotope of hydrogen is/are radioactive in nature?

asked Jan 22, 2014 by sreemathi.v

1 answer

If $ t$ and $ c$ denote a tautology and a contradiction respectively, then for any statement $p, p \wedge t$ is equal to

asked Jan 20, 2014 by thanvigandhi_1

1 answer

A good quality of water will have

asked Jan 20, 2014 by sreemathi.v

1 answer

Which of the following is not a statement?

asked Jan 17, 2014 by thanvigandhi_1

1 answer

The total number of fundamental particles in one atom of $_6 C ^{14}$ is

asked Jan 10, 2014 by sreemathi.v

1 answer

A is targetting to B, b and C are targetting to A. probability of hitting the target by A,B and C are $ \large\frac{2}{3}, \large\frac{1}{2} \: and \: \large\frac{1}{3}$ respectively. If A is hit then the probability that B hits the target and C does not is

asked Jan 9, 2014 by thanvigandhi_1

1 answer

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