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Recent questions tagged q4-b

A card is selected from a pack of 52 cards.Calculate the probability the card is an ace of spades.

asked Jun 30, 2014 by sreemathi.v

1 answer

Find the intervals in which the function $f$ given by $f (x) = 2x^2 – 3x$ is $ (b)\; strictly\; decreasing$

asked Aug 16, 2013 by sreemathi.v

1 answer

Find the coordinates of the foot of the perpendicular drawn from the origin to the plane $(b)\; 3y + 4z – 6 = 0 $

asked May 9, 2013 by rvidyagovindarajan_1

1 answer

Find the equation of the ellipse whose foci are at $(-2,4)$ and $(4,4)$ and whose major and minor axes are 10 and 8 respectively.Also find the eccentricity of the ellipse.

asked Apr 22, 2013 by sreemathi.v

0 answers

Find the equation of a plane through the point (-1,-1,2) and perpendicular to the planes $3x+2y-3z=1$ and $5x-4y+z=5.$

asked Apr 18, 2013 by sreemathi.v

0 answers

If $x^py^q=(x+y)^{p+q}$.Prove that $\large\frac{dy}{dx}=\large\frac{y}{x}$.

asked Apr 17, 2013 by sreemathi.v

0 answers

If $y=\large\frac{\sin^{-1}x}{\sqrt{1-x^2}}$,prove that $(1-x^2)\large\frac{dy}{dx}-\normalsize xy=1.$

asked Apr 16, 2013 by sreemathi.v

0 answers

If $\sin y=x\sin (a+y),$show that $\large\frac{dy}{dx}=\large\frac{\sin^2(a+y)}{\sin a}$.

asked Apr 16, 2013 by sreemathi.v

0 answers

Find $\large\frac{dy}{dx}$ if $y=\tan^{-1}\large \frac{\sqrt{1-x^2}-1}{x}$

asked Apr 15, 2013 by sreemathi.v

0 answers

Using a suitable substitution find the derivative of $\tan^{-1}\large\frac{4\sqrt x}{1-4x}$ with respect to x.

asked Apr 12, 2013 by sreemathi.v

0 answers

$x$,$y$ and $z$ represent three switches in an 'ON' position and $x',y'$ and $z'$ represent the same three switches in an 'OFF' position.Construct a switching circuit representing the polynomial $(x+y)(x'+z)+y(y'+z').$Using the laws of Boolean Algebra,show that the above polynomial is equivalent to $xz+y$ and construct an equivalent switching circuit.

asked Apr 12, 2013 by sreemathi.v

0 answers

Find the equation of the hyperbola whose foci are (0,$\pm$ 13) and the length of the conjugate axis is 20.

asked Apr 11, 2013 by sreemathi.v

0 answers

Find the equation of the ellipse with its centre at $(4,-1)$ focus at $(1,-1)$ and given that it passes through $(8,0).$

asked Apr 10, 2013 by sreemathi.v

0 answers

Find the intervals in which the function $f$ given by $f (x) = 2x^2 - 3x$ is $(a) $ strictly increasing

asked Nov 23, 2012 by thanvigandhi_1

1 answer

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