An ellipse slides between two perpendicular straight lines. Then identify the locus of its center.

An ellipse slides between two perpendicular lines the locus of its centre , is

An ellipse of semi-axes a, b slides between two perpendiuclar lines. Prove that the locus of its foci is (x^2 + y^2) (x^2 y^2 + b^4) = 4a^2 x^2 y^2 , the two lines being taken as the axes of coordinates.

An ellipse slides between two straight lines at right angles to each other. The focus of its centre is part of

A line of fixed length a+b moves so that its ends are always on two fixed perpendicular straight lines. Then the locus of the point which divides this line into portions of length aa n db is (a) an ellipse (b) parabola (c) straight line (d) none of these

A line of fixed length a+b moves so that its ends are always on two fixed perpendicular straight lines. Then the locus of the point which divides this line into portions of length aa n db is a/an (a)ellipse (b) parabola (c)straight line (d) none of these

A line of fixed length a+b moves so that its ends are always on two fixed perpendicular straight lines. Then the locus of the point which divides this line into portions of length aa n db is (a) an ellipse (b) parabola (c) straight line (d) none of these

A line of length a+b moves in such a way that its ends are always on two fixed perpendicular straight lines. Then the locus of point on this line which devides it into two portions of length a and b ,is :

A line of fixed length a + b moves so that its ends are always on two fixed perpendicular straight lines. Then the locus of a point which divides this line into portions of length a and b is