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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 4     Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        4 < a * a - 2 * a - 7         (1)
         a * a - 2 * a - 7 <16         (2)

---

    From inequality(1)：
         a < -2.464102 或  a ＞ 4.464102
    From inequality(2)：
         -3.898979 < a < 5.898979

---

    From inequalities (1) and (2)
         -3.898979 < a < -2.464102 或  4.464102 < a < 5.898979     (3)

---

    The final solution set is :
         -3.898979 < a < -2.464102 或  4.464102 < a < 5.898979

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

Return