Line 3: Line 3:
 
</math>
 
</math>
  
<math>
+
 
\[\mathbf{V}_1 \times \mathbf{V}_2 = \begin{vmatrix}
+
<math display='block'><mrow><mi>cos</mi><mo>&#x2061;</mo><mrow><mo>(</mo><mi>&#x03b8;</mi><mo>+</mo><mi>&#x03c6;</mi><mo>)</mo></mrow><mo>=</mo><mi>cos</mi><mo>&#x2061;</mo><mrow><mo>(</mo><mi>&#x03b8;</mi><mo>)</mo></mrow><mi>cos</mi><mo>&#x2061;</mo><mrow><mo>(</mo><mi>&#x03c6;</mi><mo>)</mo></mrow><mo>&#x2212;</mo><mi>sin</mi><mo>&#x2061;</mo><mrow><mo>(</mo><mi>&#x03b8;</mi><mo>)</mo></mrow><mi>sin</mi><mo>&#x2061;</mo><mrow><mo>(</mo><mi>&#x03c6;</mi><mo>)</mo></mrow></mrow></math>
\mathbf{i} &amp; \mathbf{j} &amp; \mathbf{k} \\
 
\frac{\partial X}{\partial u} &amp; \frac{\partial Y}{\partial u} &amp; 0 \\
 
\frac{\partial X}{\partial v} &amp; \frac{\partial Y}{\partial v} &amp; 0
 
\end{vmatrix}  \]
 
</math>
 

Revision as of 17:39, 5 November 2012

\( \sum f(x) = F(x) + g(x) \)


<math display='block'><mrow><mi>cos</mi><mo>⁡</mo><mrow><mo>(</mo><mi>θ</mi><mo>+</mo><mi>φ</mi><mo>)</mo></mrow><mo>=</mo><mi>cos</mi><mo>⁡</mo><mrow><mo>(</mo><mi>θ</mi><mo>)</mo></mrow><mi>cos</mi><mo>⁡</mo><mrow><mo>(</mo><mi>φ</mi><mo>)</mo></mrow><mo>−</mo><mi>sin</mi><mo>⁡</mo><mrow><mo>(</mo><mi>θ</mi><mo>)</mo></mrow><mi>sin</mi><mo>⁡</mo><mrow><mo>(</mo><mi>φ</mi><mo>)</mo></mrow></mrow></math>