(a)

$x^0=\int r^2+z^2d\tau$

$x^1=\int r\sin\theta d\tau$

$x^2=\int r\cos\theta d\tau$

$x^3=\int z d \tau$

(b)

$x^0= \sqrt3 ct$

$x^1=ct$

$x^2=ct_0 \sin(t/t_0)$

$x^3=ct_0 \cos(t/t_0)$

where $t_0$ is constant.

–2 votes

(a)

$x^0=\int r^2+z^2d\tau$

$x^1=\int r\sin\theta d\tau$

$x^2=\int r\cos\theta d\tau$

$x^3=\int z d \tau$

(b)

$x^0= \sqrt3 ct$

$x^1=ct$

$x^2=ct_0 \sin(t/t_0)$

$x^3=ct_0 \cos(t/t_0)$

where $t_0$ is constant.

closed with the note:
No effort.

Please show your attempt. Or explain your difficulty.

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