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It supports mathematical functions (including trigonometric functions).
Current location：Mathematical operation > History of Mathematical Computation > Answer
Overview: 1 questions will be solved this time.Among them
☆1 inequalities
[ 1/1Inequality]
Assignment:Find the solution set of inequality 3x ≥x+9 >3+2x ≤xx-x-7 .
Question type: Inequality
Solution:
The inequality can be reduced to 3 inequalities：
3 * x ≥ x + 9 (1)
x + 9 >3 + 2 * x (2)
3 + 2 * x ≤ x * x - x - 7 (3)
From inequality(1)：
x ≥ 9/2
From inequality(2)：
x < 6
From inequality(3)：
x ≤ -2 或 x ≥ 5
From inequalities (1) and (2)
9/2 ≤ x < 6 (4)
From inequalities (3) and (4)
5 ≤ x < 6 (5)
The final solution set is :
5 ≤ x < 6