1<math xmlns="http://www.w3.org/1998/Math/MathML" display="block"> 2 <mrow> 3 <mtext>ibetac</mtext> 4 <mfenced> 5 <mrow> 6 <mi>a</mi> 7 <mo>,</mo> 8 <mi>b</mi> 9 <mo>,</mo> 10 <mi>x</mi> 11 </mrow> 12 </mfenced> 13 <mspace width="1em"/> 14 <mo>=</mo> 15 <mspace width="1em"/> 16 <mn>1</mn> 17 <mo>−</mo> 18 <msub> 19 <mi>I</mi> 20 <mi>x</mi> 21 </msub> 22 <mfenced> 23 <mrow> 24 <mi>a</mi> 25 <mo>,</mo> 26 <mi>b</mi> 27 </mrow> 28 </mfenced> 29 <mspace width="1em"/> 30 <mo>=</mo> 31 <mspace width="1em"/> 32 <msub> 33 <mi>I</mi> 34 <mrow> 35 <mn>1</mn> 36 <mo>−</mo> 37 <mi>x</mi> 38 </mrow> 39 </msub> 40 <mfenced> 41 <mrow> 42 <mi>b</mi> 43 <mo>,</mo> 44 <mi>a</mi> 45 </mrow> 46 </mfenced> 47 </mrow> 48</math> 49 50