What was the cost price of the suitcase purchased by Samir? I. Samir got a 25 percent concession on the labelled price. II. Samir sold the suitcase for Rs. 2000 with 25 percent profit on the labelled price.
The eccentricity of the curve $ 2x^2 + y^2 - 8x - 2y + 1 = 0 $ is:
The relationship between \( a \) and \( b \) so that the function \( f(x) \) defined by
is continuous at \( x = 3 \), is:
The value of the definite integral
is:
The local minimum value of the function \[ f(x) = 3 + |x|, \quad x \in \mathbb{R} \] is:
The following determinant is equal to:
If the system of linear equations \[ x + ky + 3z = 0, \quad 3x + ky - 2z = 0, \quad 2x + 4y - 3z = 0 \] has a non-zero solution \( (x, y, z) \), then \( \frac{xz}{y^2} \) is equal to:
A parabola has the origin as its focus and the line \( x = 2 \) as the directrix. Then the vertex of the parabola is at:
For what value of \( k \), does the equation \[ 9x^2 + y^2 = k(x^2 - y^2 - 2x) \] represent the equation of a circle?