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Recent questions tagged q7

Find the equation of a line drawn perpendicular to the line $ \large\frac{x}{4}$$+\large\frac{y}{6}$$=1$ through the point, where it meets the $y$ - axis

asked May 20, 2014 by thanvigandhi_1

1 answer

The numbers of five-digit telephone numbers having atleast one of their digits repeated

asked May 19, 2014 by sreemathi.v

1 answer

How many automobile license plates can be made if each plate contains two different letters followed by three different digits?

asked May 15, 2014 by sreemathi.v

1 answer

In an examination a question paper consists of 12 questions divided into two parts (i.e) Part I and Part II.Containing 5 and 7 questions respectively.A student is required to attempt 8 question in all,selecting at least 3 from each part.In how many ways can a student select the questions 2

asked May 14, 2014 by sreemathi.v

1 answer

In how many ways can we select a cricket eleven from 17 players in which only 5 players can bowl if each cricket eleven must include exactly 4 bowlers?

asked May 14, 2014 by sreemathi.v

1 answer

Find the equation of the line parallel to the line $3x-4y+2=0$ and passing through the point $(-2, 3)$

asked May 10, 2014 by thanvigandhi_1

1 answer

Prove the following statement by the principle of mathematical induction : \[\] For any natural number $n$, $7^{n}-2^n$ is divisible by 5.

asked May 5, 2014 by thanvigandhi_1

0 answers

Prove that \[\] $ 1^2+2^2+...+n^2 > \large\frac{n^3}{3}$$, n \in N$

asked May 5, 2014 by thanvigandhi_1

1 answer

If $x=a(\theta - \sin \theta) \quad ; y= a(1+\cos \theta) $ find $\large\frac{d^2y}{dx^2}$ at $\theta =\large\frac{\pi}{2}$

asked May 1, 2014 by meena.p

1 answer

Prove the following by using the principle of mathematical induction for all $n \in N$ \[\] $1.3+3.5+5.7+...+(2n-1)(2n+1)= \large\frac{n(4n^2+6n-1)}{3}$

asked Apr 29, 2014 by thanvigandhi_1

1 answer

If $a\cos\theta+b\sin \theta=m$ and $a\sin \theta-b\cos\theta=n$ then show that $a^2+b^2=m^2+n^2$

asked Apr 18, 2014 by sreemathi.v

1 answer

Evaluate $\sin 3x+\sin 2x-\sin x=4\sin x\cos\large\frac{x}{2}$$\cos\large\frac{3x}{2}$

asked Apr 18, 2014 by sreemathi.v

1 answer

Find the general solution for the equation $\sin 2x+\cos x=0$

asked Apr 18, 2014 by sreemathi.v

1 answer

Prove :$\large\frac{\tan(\Large\frac{\pi}{4}\normalsize +x)}{\tan(\Large\frac{\pi}{4}\normalsize -x)}=\big(\large\frac{1+\tan x}{1-\tan x}\big)^2$

asked Apr 17, 2014 by sreemathi.v

1 answer

Find the value of the trigonometric functions $cosec (-1410^{\large\circ})$

asked Apr 17, 2014 by sreemathi.v

1 answer

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