List of practice Questions

\(\int \left( \frac{1}{x^2} + \frac{\sin^3 x + \cos^3 x}{\sin^2 x \cos^2 x} \right) dx =\)
If the points \((1, 1, \lambda)\) and \((-3, 0, 1)\) are equidistant from the plane \(3x + 4y - 12z + 13 = 0\), then the values of \(\lambda\) are
If \(f(x) = \frac{x(a^x - 1)}{1 - \cos x}\) and \(g(x) = \frac{x(1 - a^x)}{a^x \left(\sqrt{1 - x^2} - \sqrt{1 + x^2}\right)}\), then \(\lim_{x \to 0} (f(x) - g(x)) =\)
If \(\frac{d}{dx}\left\{ \frac{x-1}{x-\sqrt{x}} e^{2x+1} \right\} = \frac{x-1}{x-\sqrt{x}} e^{2x+1} f(x)\), then \(f(4) =\)
The locus of a point which divides the line segment joining the focus and any point on the parabola \(y^2 = 12x\) in the ratio \(m:n\) (\(m+n \ne 0\)) is a parabola. Then the length of the latus rectum of that parabola is
The curve represented by \(\frac{x^2}{12-\alpha} + \frac{y^2}{\alpha-10} = 1\) is
If any tangent drawn to the ellipse \(\frac{x^2}{16} + \frac{y^2}{9} = 1\) touches one of the circles \(x^2 + y^2 = \alpha^2\), then the range of \(\alpha\) is
Let \(x\) be the eccentricity of a hyperbola whose transverse axis is twice its conjugate axis. Let \(y\) be the eccentricity of another hyperbola for which the distance between the foci is 3 times the distance between its directrices. Then \(y^2 - x^2 =\)
O(0,0,0), A(3,1,4), B(1,3,2) and C(0,4,-2) are the vertices of a tetrahedron. If G is the centroid of the tetrahedron and \(G_1\) is the centroid of its face ABC, then the point which divides \(GG_1\) in the ratio 1:2 is
If L is a line common to the planes \(3x + 4y + 7z = 1\), \(x - y + z = 5\) then the direction ratios of the line L are
The locus of the centre of the circle touching the x-axis and passing through the point \((-1,1)\) is
The centres of all circles passing through the points of intersection of the circles \(x^2 + y^2 + 2x - 2y + 1 = 0\) and \(x^2 + y^2 - 2x + 2y - 2 = 0\) and having radius \(\sqrt{14}\) lie on the curve
For the parabola \(y = x^2 - 3x + 2\), match the items in list-1 to that of the items in list-2.
S is a focus, Z is intersection of axis and directrix, P is one end point of latus rectum, Q is the point on the parabola at which tangent is parallel to X-axis
O(0,0), B(-3,-1), C(-1,-3) are vertices of a triangle OBC. D is a point on OC and E is a point on OB. If the equation of DE is \(2x + 2y + \sqrt{2} = 0\), then the ratio in which the line DE divides the altitude of the triangle OBC is
Every point on the curve \(3x + 2y - 3xy = 0\) is the centroid of a triangle formed by the coordinate axes and a line (L) intersecting both the coordinate axes. Then all such lines (L)
The value of 'a' for which the equation \((a^2-3)x^2 + 16xy - 2ay^2 + 4x - 8y - 2 = 0\) represents a pair of perpendicular lines is
The slope of a common tangent to the circles \(x^2 + y^2 = 16\) and \((x-9)^2 + y^2 = 16\) is
The equation of the circle whose radius is 3 and which touches the circle \(x^2 + y^2 - 4x - 6y - 12 = 0\) internally at \((-1, -1)\) is
Suppose C1 and C2 are two circles having no common points, then
A, B are the events in a random experiment. If \( P(A)=\frac{1}{2}, P(B)=\frac{1}{3}, P(A \cap B)=\frac{1}{4} \), then \( P(A^c | B^c) + P(A | B) = \)
Two persons A and B play a game by throwing two dice. If the sum of the numbers appeared on the two dice is even, A will get \( \frac{1}{2} \) point and B will get \( \frac{1}{2} \) point. If the sum is odd, A will get one point and B will get no point. The arithmetic mean of the random variable of the number of points of A is
A typist claims that he prepares a typed page with typo errors of 1 per 10 pages. In a typing assignment of 40 pages, if the probability that the typo errors are at most 2 is p, then \(e^2 p =\)
A line segment joining a point A on x-axis to a point B on y-axis is such that AB = 15. If P is a point on AB such that \(\frac{AP}{PB} = \frac{2}{3}\), then the locus of P is

The point \(P(\alpha, \beta)\) (\(\alpha>0, \beta>0\)) undergoes the following transformations successively.
a) Translation to a distance of 3 units in positive direction of x-axis. 
b) Reflection about the line \(y=-x\). 
c) Rotation of axes through an angle of \(\frac{\pi}{4}\) about the origin in the positive direction. 
If the final position of that point P is \((-4\sqrt{2}, -2\sqrt{2})\), then \((\alpha + \beta) =\)

If the line passing through the point \((4, -3)\) and having negative slope makes an angle of \(45^\circ\) with the line joining the points \((1,1), (2,3)\) then the sum of intercepts of that line is