1<math xmlns="http://www.w3.org/1998/Math/MathML" display="block"> 2 <mrow> 3 <mtext>acosh</mtext> 4 <mfenced> 5 <mrow> 6 <mi>x</mi> 7 </mrow> 8 </mfenced> 9 <mspace width="1em"/> 10 <mo>=</mo> 11 <mspace width="1em"/> 12 <mi>log</mi> 13 <mfenced> 14 <mrow> 15 <mi>x</mi> 16 <mo>+</mo> 17 <msqrt> 18 <mrow> 19 <msup> 20 <mi>x</mi> 21 <mn>2</mn> 22 </msup> 23 <mo>−</mo> 24 <mn>1</mn> 25 </mrow> 26 </msqrt> 27 </mrow> 28 </mfenced> 29 </mrow> 30</math> 31 32