wh-g-005.xml /size: 637 b    last modification: 2020-07-01 14:35
1<math xmlns='http://www.w3c.org/mathml' version='2.0'>
2  <apply> <eq/>
3    <apply> <tan/>
4      <apply> <plus/>
5        <ci> x </ci>
6        <ci> y </ci>
7      </apply>
8    </apply>
9    <apply> <divide/>
10      <apply> <plus/>
11        <apply> <tan/>
12          <ci> x </ci>
13        </apply>
14        <apply> <tan/>
15          <ci> y </ci>
16        </apply>
17      </apply>
18      <apply> <minus/>
19        <cn> 1 </cn>
20        <apply> <times/>
21          <apply> <tan/>
22            <ci> x </ci>
23          </apply>
24          <apply> <tan/>
25            <ci> y </ci>
26          </apply>
27        </apply>
28      </apply>
29    </apply>
30  </apply>
31</math>