Hi, think this question will be relatively simple for those familiar with tensor analysis(adsbygoogle = window.adsbygoogle || []).push({});

Need to show that (-x, -y, -z, t) is a covector. We're given a hint that we should apply a lorentz boost in the x direction but i don't see the point of this. If that is a covector then surely you can say

x

y

z

t

is a vector and just take the scalar product to find the interval?

There is also a samilar question where by I have to show that

(df/dx, df/dy,df/dz,df/dt) (f is a scalar field) is a covector

none of these questions are for credit or anything it's just to help with our understanding...but I don't :(

Thanks

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# Homework Help: How to show something is a covector?

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