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Display information for equation id:math.1889.26 on revision:1889
* Page found: Variationsprinzipien (eq math.1889.26)
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Hash: 426dc8b9b311324d8a60239636c433e0
TeX (original user input):
\delta f=f(x1+\delta x1,...)-f(x1,...)=\sum\limits_{i=1}^{N}{{}}\frac{\partial }{\partial {{x}_{i}}}f(x)\delta {{x}_{i}}=0
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MathML (1.171 KB / 335 B) :
<math class="mwe-math-element" xmlns="http://www.w3.org/1998/Math/MathML"><mrow data-mjx-texclass="ORD"><mstyle displaystyle="true" scriptlevel="0"><mi>δ</mi><mi>f</mi><mo>=</mo><mi>f</mi><mo stretchy="false">(</mo><mi>x</mi><mn>1</mn><mo>+</mo><mi>δ</mi><mi>x</mi><mn>1</mn><mo>,</mo><mo>.</mo><mo>.</mo><mo>.</mo><mo stretchy="false">)</mo><mo>−</mo><mi>f</mi><mo stretchy="false">(</mo><mi>x</mi><mn>1</mn><mo>,</mo><mo>.</mo><mo>.</mo><mo>.</mo><mo stretchy="false">)</mo><mo>=</mo><munderover><mo form="prefix" texclass="OP">∑</mo><mrow data-mjx-texclass="ORD"><mrow data-mjx-texclass="ORD"><mi>i</mi><mo>=</mo><mn>1</mn></mrow></mrow><mrow data-mjx-texclass="ORD"><mi>N</mi></mrow></munderover><mrow data-mjx-texclass="ORD"><mfrac><mrow data-mjx-texclass="ORD"><mi>∂</mi></mrow><mrow data-mjx-texclass="ORD"><mrow data-mjx-texclass="ORD"><mi>∂</mi><msub><mi>x</mi><mrow data-mjx-texclass="ORD"><mi>i</mi></mrow></msub></mrow></mrow></mfrac></mrow><mi>f</mi><mo stretchy="false">(</mo><mi>x</mi><mo stretchy="false">)</mo><mi>δ</mi><msub><mi>x</mi><mrow data-mjx-texclass="ORD"><mi>i</mi></mrow></msub><mo>=</mo><mn>0</mn></mstyle></mrow></math>
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