Overview: 1 questions will be solved this time.Among them
           ☆1 inequalities

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 0 <= -(x-1)^2+4 <= 4 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        0 <= -( x - 1 ) ^ 2 + 4         (1)
         -( x - 1 ) ^ 2 + 4 <= 4         (2)

---

    From inequality(1)：
         x ∈ R (R is all real numbers),that is, in the real number range, the inequality is always established!
    From inequality(2)：
         x ≤ 1 或  1 ≤ x ≤ 1 或  x ≥ 1

---

    From inequalities (1) and (2)
         x ≤ 1 或  1 ≤ x ≤ 1 或  x ≥ 1    (3)

---

    The final solution set is :
         x ≤ 1 或  1 ≤ x ≤ 1 或  x ≥ 1

Your problem has not been solved here? Please take a look at the  hot problems ！