Prove that B axis = 2B equator.

Prove that B_(axis) = 2 B_(equator) for the same distances from centre of magnet.

Prove that the equation y^2+2Ax+2By+c=0 is represent a parabola and whose axis is parallel to x axis.

Fill in the blanks to prove that b is the geometric mean of a and c, if (a-b+c)/(ab+c^2) =1/(b+c)

Write a formula for B_(axis) and B_(equator) for Bar magnet?

If 2a+3b+6c=0, then prove that at least one root of the equation a x^2+b x+c=0 lies in the interval (0,1).

If A+B+C=pi , prove that cos 2A +cos 2B +cos 2C=-1-4cos A cos Bcos C.

If a cos theat + b sin theta = m and a sin theta- b cos theta = n, then prove that a^2 + b^2 = m^2 + n^2

Choose the corect options. The magnetic field at a point A on the axis of a small bar magnet is equal to the field at a point B on the equator of same magnet. The ratio of distance of A and B from centre of magnet is A. 2^3 B. 2^(-1//3) C. 2^(-2//3) D. 2^(1//3)

The abscisae of A and B are the roots of the equation x ^(2) + 2ax -b ^(2) =0 and their ordinates are the roots of the equation y ^(2) + 2 py -q ^(2) =0. The equation of the circle with AB as diameter is

The abscissae of A and B are the roots of the equation x^2+2ax-b^2=0 and their ordinates are the roots of the equation y^2+2py-q^2=0 . The equation of the circle with AB as diameter is