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→Table 45. Computation of dJ
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| => |
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| dj = u v (du, dv) + u (v) dv + (u) v du + (u)(v) . 0 |
| dJ = u v (du, dv) + u (v) dv + (u) v du + (u)(v) . 0 |
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o-------------------------------------------------------------------------------o
o-------------------------------------------------------------------------------o
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<font face="courier new">
{| align="center" border="1" cellpadding="12" cellspacing="0" style="background:lightcyan; font-weight:bold; text-align:left; width:96%"
|+ Table 45. Computation of d''J''
|
{| align="left" border="0" cellpadding="0" cellspacing="0" style="background:lightcyan; font-weight:bold; text-align:left; width:100%"
| width="6%" | D''J''
| width="25%" | = ''u'' ''v'' ((d''u'')(d''v''))
| width="23%" | + ''u'' (''v'')(d''u'') d''v''
| width="23%" | + (''u'') ''v'' d''u'' (d''v'')
| width="23%" | + (''u'')(''v'') d''u'' d''v''
|-
| width="6%" | ⇒
|-
| width="6%" | d''J''
| width="25%" | = ''u'' ''v'' (d''u'', d''v'')
| width="23%" | + ''u'' (''v'') d''v''
| width="23%" | + (''u'') ''v'' d''u''
| width="23%" | + (''u'')(''v'') <math>\cdot</math> 0
|}
|}
</font><br>
===Figure 46-a. Differential of J (Areal)===
===Figure 46-a. Differential of J (Areal)===