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Why math equation creates error in document?

TeX - LaTeX Asked by Asrorkhuja Ortikov on January 27, 2021

In my latex document as long as I use this formula, it throws tons of unrelated errors which is working without the formula. Although it is creating a formula on the document, but the problem is, numbering of formula the is not aligned the formula, but one return down and when I refer it with eqref{charging_gp} for example, it is showing section(i.g. 2.2.1) number instead of math formula number (i.g. 2.1). Also, it is missing with my bibliography (some of are showing, some not). Could anybody help me to detect the error please, because I see none?

usepackage{amsmath}

begin{equation} label{charging_gp}


     i_{c,gp}=min(0.7C,frac{4.2-{v_{0}}}{r_{r}}+beta*frac{4.2-{widetilde{v_{0}}}}{r_{r}}).



end{equation}

One Answer

As egreg just said ("Blank lines are not allowed inside math displays."), you should write:

documentclass[12pt]{article}
usepackage{amsmath}
begin{document}
begin{equation}label{eq:nice}
i_{c,gp}= min(0.7C,frac{4.2-{v_{0}}}{r_{r}}+beta*frac{4.2-{tilde{v}_{0}}}{r_{r}}).
end{equation}
end{document} 

You should also write min instead of min. Also tilde[v}_[0} seems nicer than widetilde[v_[0}}

Correct answer by Denis on January 27, 2021

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