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## Homework Statement

A particle moves so that [tex] \vec{x} \equiv [x_0 exp(2t^2), y_0 exp(-t^2), z_0 exp(-t^2)] [/tex]. Find the velocity of the particle in terms of [tex] x_0 [/tex] and t (the LAgrangian description) and show it can be written as [tex] \vec{u} \equiv (4xt, -2yt, -2zt),[/tex] the Eulerian description

## Homework Equations

## The Attempt at a Solution

[tex] \vec {u} = [4tx_0 exp(2t^2), -2ty_0 exp(-t^2), -2tz_0 exp(-t^2)] [/tex]

The exp's go to 1 !!?

Thanks