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1 <math display="block" xmlns="http://www.w3.org/1998/Math/MathML">
2   <maction>
3    <mrow>
4     <mo>&int;</mo>
5     <mo>&ApplyFunction;</mo>
6     <mfrac>
7       <mrow>
8         <mrow>
9           <mi>a</mi>
10           <mo>&InvisibleTimes;</mo>
11           <mi>x</mi>
12         </mrow>
13         <mo>+</mo>
14         <mi>b</mi>
15       </mrow>
16       <mrow>
17         <msup>
18           <mi>x</mi>
19           <mn>2</mn>
20         </msup>
21         <mo>+</mo>
22         <mrow>
23           <mi>p</mi>
24           <mo>&InvisibleTimes;</mo>
25           <mi>x</mi>
26         </mrow>
27         <mo>+</mo>
28         <mi href="javascript:alert('You clicked on q')">q</mi>
29       </mrow>
30     </mfrac>
31    </mrow>
32    <mtable frame="solid" framespacing=".5em .5em"><mtr><mtd><mtext>...</mtext></mtd></mtr></mtable>
33   </maction>
34   <mo fontstyle="italic">d</mo>
35   <mi>x</mi>
36   <mo>=</mo>
37   <mrow>
38     <mrow>
39       <mfrac><mi>a</mi><mn>2</mn></mfrac>
40       <mo>&InvisibleTimes;</mo>
41       <mrow>
42         <mi>ln</mi>
43         <mo>&ApplyFunction;</mo>
44         <mrow>
45           <mo>(</mo>
46           <mrow>
47             <msup><mi>x</mi><mn>2</mn></msup>
48             <mo>+</mo>
49             <mrow>
50               <mi>p</mi>
51               <mo>&InvisibleTimes;</mo>
52               <mi>x</mi>
53             </mrow>
54             <mo>+</mo>
55             <mi>q</mi>
56           </mrow>
57           <mo>)</mo>
58         </mrow>
59       </mrow>
60     </mrow>
61     <mo>+</mo>
62     <mrow>
63       <mfrac>
64         <mrow>
65           <mrow>
66             <mn>2</mn>
67             <mo>&InvisibleTimes;</mo>
68             <mi>b</mi>
69           </mrow>
70           <mo>-</mo>
71           <mrow>
72             <mi>a</mi>
73             <mo>&InvisibleTimes;</mo>
74             <mi>p</mi>
75           </mrow>
76         </mrow>
77         <msqrt>
78           <mrow>
79             <mrow>
80               <mn>4</mn>
81               <mo>&InvisibleTimes;</mo>
82               <mi>q</mi>
83             </mrow>
84             <mo>-</mo>
85             <msup>
86               <mi>p</mi>
87               <mn>2</mn>
88             </msup>
89           </mrow>
90         </msqrt>
91       </mfrac>
92       <mo>&InvisibleTimes;</mo>
93       <mrow>
94         <mi>arctg</mi>
95         <mo>&ApplyFunction;</mo>
96         <mfrac>
97           <mrow>
98             <mrow>
99               <mn>2</mn>
100               <mo>&InvisibleTimes;</mo>
101               <mi>x</mi>
102             </mrow>
103             <mo>+</mo>
104             <mi>p</mi>
105           </mrow>
106           <msqrt>
107             <mrow>
108               <mrow>
109                 <mn>4</mn>
110                 <mo>&InvisibleTimes;</mo>
111                 <mi>q</mi>
112               </mrow>
113               <mo>-</mo>
114               <msup>
115                 <mi>p</mi>
116                 <mn>2</mn>
117               </msup>
118             </mrow>
119           </msqrt>
120         </mfrac>
121       </mrow>
122     </mrow>
123     <mo>+</mo>
124     <mi href="javascript:alert('You clicked on c')">c</mi>
125   </mrow>  
126   <mspace width="1cm"/>
127   <mtext href="http://www.cs.unibo.it/~lpadovan/">go to Luca's home page</mtext>
128 </math>