1<math xmlns="http://www.w3.org/1998/Math/MathML" display="block"> 2 <mrow> 3 <mtext>hazard</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>h</mi> 13 <mfenced> 14 <mrow> 15 <mi>x</mi> 16 </mrow> 17 </mfenced> 18 <mspace width="1em"/> 19 <mo>=</mo> 20 <mspace width="1em"/> 21 <mfrac> 22 <mrow> 23 <mtext>pdf</mtext> 24 <mfenced> 25 <mrow> 26 <mi>x</mi> 27 </mrow> 28 </mfenced> 29 </mrow> 30 <mrow> 31 <mn>1</mn> 32 <mo>−</mo> 33 <mtext>cdf</mtext> 34 <mfenced> 35 <mrow> 36 <mi>x</mi> 37 </mrow> 38 </mfenced> 39 </mrow> 40 </mfrac> 41 </mrow> 42</math> 43 44