Overview: 1 questions will be solved this time.Among them
☆1 inequalities
[ 1/1Inequality]
Assignment:Find the solution set of inequality 0.99 Question type: Inequality
Solution:
The inequality can be reduced to 2 inequalities:
0.99 < sin x ^ 2 + cos x ^ 2 (1)
sin x ^ 2 + cos x ^ 2 <1.01 (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 ∈ R (R is all real numbers),that is, in the real number range, the inequality is always established!
From inequalities (1) and (2)
x ∈ R (R is all real numbers),that is, in the real number range, the inequality is always established! (3)
The final solution set is :
x ∈ R (R is all real numbers),that is, in the real number range, the inequality is always established!
*Note: Radian.