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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 1 <= ((73*a^2+28*a+4)^(1/2)+11*a+2)/(4*a) <= 4 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        1 <= ( ( 73 * a ^ 2 + 28 * a + 4 ) ^ ( 1 / 2 ) + 11 * a + 2 ) / ( 4 * a )         (1)
         ( ( 73 * a ^ 2 + 28 * a + 4 ) ^ ( 1 / 2 ) + 11 * a + 2 ) / ( 4 * a ) <= 4         (2)
        From the definition field of divisor
         4 * x ≠ 0        (3 )

---

    From inequality(1)：
         a ≥ 0
    From inequality(2)：
         a ≤ 0
    From inequality(3)：
         a < 0 或  a ＞ 0

---

    From inequalities (1) and (2)
         0 ≤ a ≤ 0    (4)
    From inequalities (3) and (4)
        x ∈ Φ (Φ is empty)that is, the inequality will never be estatlished within the real number range!    (5)

---

    The final solution set is :
        x ∈ Φ (Φ is empty)that is, the inequality will never be estatlished within the real number range!

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