Example 2 0 ify≤3， ={2-(6/y) if3≤y≤6， 1 if6≤y. Differentiating this expression,we obtain the PDF of Y: 0 ify≤3， - if3≤y≤6， if6≤y.Example 2 = ൞ 0 if 𝑦 ≤ 3, 2 − (6/𝑦) if 3 ≤ 𝑦 ≤ 6, 1 if 6 ≤ 𝑦. ◼ Differentiating this expression, we obtain the PDF of 𝑌: 𝑓𝑌 𝑦 = ൞ 0 if 𝑦 ≤ 3, 6/𝑦 2 if 3 ≤ 𝑦 ≤ 6, 0 if 6 ≤ 𝑦