Relativity, Physics, Math, Einstein, Spacetime.
Attention is invited to the fact that 𝑥′ is dependent on 𝑥 as well as 𝑡. We may also say that any relation between Δ𝑥′ and Δ𝑥 will necessarily involve terms of Δ𝑡. Therefore, Δ operator should be applied first, after which a value of Δ𝑡 can be substituted for any instant 𝑡. If Δ operator is applied