Transformation to a r. frame in which E and B are parallel

[egutierrezposse]

This is problem 11.15 of Jackson, Classical Electrodynamics

In a certain reference frame a static, uniform, electric field Eo is parallel to the x axis, and a static, uniform, magnetic induction Bo = 2Eo lies in the xy plane, making an angle theta with the axis. Determine the relative velocity of a reference frame in which the electric and magnetic fields are parallel.

I need the resolution for a general Lorentz transformation (not-only in the z-axis)

Thanks

 

[TSny]

Hello, egutierrezposse. Welcome to PF!

According to forum rules, we need to see some attempt at a solution.

Try to convince yourself that a boost in the z direction will do the trick.