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删除327字节 、 2020年10月14日 (三) 14:48
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:<math>
 
:<math>
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<math>
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数学
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\begin{align}
 
\begin{align}
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\begin{align}
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Begin { align }
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& \frac {dy}{dx} = f(x) \\[5pt]
 
& \frac {dy}{dx} = f(x) \\[5pt]
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& \frac {dy}{dx} = f(x) \\[5pt]
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(x)[5 pt ]
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& \frac {dy}{dx} = f(x,y) \\[5pt]
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& \frac {dy}{dx} = f(x,y) \\[5pt]
 
& \frac {dy}{dx} = f(x,y) \\[5pt]
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(x,y)[5 pt ]
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& x_1 \frac {\partial y}{\partial x_1} + x_2 \frac {\partial y}{\partial x_2} = y
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& x_1 \frac {\partial y}{\partial x_1} + x_2 \frac {\partial y}{\partial x_2} = y
 
& x_1 \frac {\partial y}{\partial x_1} + x_2 \frac {\partial y}{\partial x_2} = y
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& x 1 frac 部分 x 1} + x 2 frac 部分 y 2} y
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\end{align}
 
\end{align}
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\end{align}
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End { align }
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</math>
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</math>
 
</math>
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数学
      
In all these cases, {{mvar|y}} is an unknown function of {{mvar|x}} (or of <math>x_1</math> and <math>x_2</math>), and {{mvar|f}} is a given function.
 
In all these cases, {{mvar|y}} is an unknown function of {{mvar|x}} (or of <math>x_1</math> and <math>x_2</math>), and {{mvar|f}} is a given function.
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