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Recent questions tagged p274

The distance between the foci of the ellipse $9x^{2}+5y^{2}=180 $ is

asked May 13, 2013 by poojasapani_1

1 answer

The length of the semi-major and the length of the semi-minor axis of the ellipse $\large\frac{x^{2}}{144}+\frac{y^{2}}{169}$=$1$ are

asked May 13, 2013 by poojasapani_1

1 answer

The eccentricity of the conic $9x^{2}+5y^{2}-54x-40y+116=0 $ is

asked May 13, 2013 by poojasapani_1

1 answer

The angle between the two tangents drawn from the point $(-4 , 4)$ to $y^{2}=16x $ is

asked May 13, 2013 by poojasapani_1

1 answer

The tangents at the end of any focal chord to the parabola $y^{2}=12x$ intersect on the line

asked May 13, 2013 by poojasapani_1

1 answer

The line $ 2x+3y+9=0$ touches the parabola $y^{2}=8x$ at the point

asked May 13, 2013 by poojasapani_1

1 answer

The vertex of the parabola $ x^{2}=8y-1$ is

asked May 13, 2013 by poojasapani_1

1 answer

The focus of the parabola $x^{2}=16y$ is

asked May 13, 2013 by poojasapani_1

1 answer

The length of the latus rectum of the parabola whose vertex is $(2 ,-3)$ and the directrix $ x=4 $ is

asked May 13, 2013 by poojasapani_1

1 answer

The diretrix of the parabola $y^{2}=x+4$ is

asked May 13, 2013 by poojasapani_1

1 answer

The length of the latus rectum of the parabola $y^{2}-4x+4y+8=0$ is

asked May 13, 2013 by poojasapani_1

1 answer

Two biased dice are thrown together.For the first die $P(6)=\Large \frac{1}{2}$,the other scores being equally likely while for the second die,$P(1)=\Large \frac{2}{5}$ and the other scores are equally likely.Find the probability distribution of 'the number of ones seen'.

asked Jan 9, 2013 by sreemathi.v

1 answer

A die is thrown three times.Let X be 'the number of twos seen'.Find the expectation of X.

asked Jan 9, 2013 by sreemathi.v

1 answer

A biased die is such that $P(4)=\Large \frac{1}{10}$ and other scores being equally likely.The die is tossed twice.If X is the number of fours seen',find the variance of the random variable X.

asked Jan 9, 2013 by sreemathi.v

1 answer

For the following probability distribution determine standard deviation of the random variable X.

asked Jan 9, 2013 by sreemathi.v

1 answer

The probability distribution of a random variable X is given below:

asked Jan 9, 2013 by sreemathi.v

0 answers

Consider the probability distribution of a random variable X.

asked Jan 9, 2013 by sreemathi.v

1 answer

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