Changes

{|style="width:500px; height:60px; text-align:center;background-color:#704982;" align="center"

{|style="width:500px; height:60px; text-align:center;background-color:#999900;" align="center"

|-style="background-color:#F8F0FB;text-align:center;"

|-style="background-color:#F8F0FB;text-align:center;"

|style="width:100px;"|<math>x+3=7</math>

|style="background-color:#fff;width:100px;"|<math>f(x)=\sin x</math>

<math>x=?</math>

<math>f'(x)=?</math>

|This artice deals with mathematical concept appropriate for a student of in early high school.  

|style="background-color:#ffffcc"|This artice deals with mathematical concept appropriate for a student in late high school or early university.  

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