- #1

nhrock3

- 415

- 0

f_1(u)[/TEX] and [TEX]f_2(u)[/TEX] are functions of "u"

u=z-ct

i have the formula

[TEX]\nabla \times \vec{E}=-\frac{db}{dt } [/TEX]

[TEX]\nabla\times\vec{E}=|\begin{array}{ccc}

\hat{x} & \hat{y} & \hat{z}\\

\frac{{d}}{dx} & {\frac{{d}}{dy}} & \frac{{d}}{dz}|=\\

f_{1}(z-ct) & f_{2}(z-ct) & 0\end{array}\hat{-x}\frac{{df_{2}}}{dz}-\hat{y}\frac{{df_{1}}}{dz}+\hat{z0}=-\frac{{d\overrightarrow{B}}}{dt}[/TEX]

i want to find B

so i need to integrate the left side by t

in order to get B

but f_1 f_2 are function of u

how to make a result

?

and then i need to show that [tex]B\bullet E=0[/tex]

i can't get 0