Overview: 3 questions will be solved this time.Among them
☆2 inequalities
☆1 equations
[ 1/3 Equation]
Work: Find the solution of equation sin(2*x) = 0.5 .
Question type: Equation
Solution:
The solution of the equation:
x1≈-8.115781 , keep 6 decimal places
x2≈-6.021386 , keep 6 decimal places
x3≈-4.974188 , keep 6 decimal places
x4≈-2.879793 , keep 6 decimal places
x5≈-1.832596 , keep 6 decimal places
x6≈0.261799 , keep 6 decimal places
x7≈1.308997 , keep 6 decimal places
x8≈3.403392 , keep 6 decimal places
x9≈4.450590 , keep 6 decimal places
x10≈6.544985 , keep 6 decimal places
There are 10 solution(s). *Note: Radian.
解程的详细方法请参阅:《方程的解法》[ 2/3Inequality]
Assignment:Find the solution set of inequality x >0 .
Question type: Inequality
Solution:
The inequality can be reduced to 1 inequality:
x >0 (1)
From inequality(1):
x > 0
The final solution set is :
x > 0[ 3/3Inequality]
Assignment:Find the solution set of inequality x <180 .
Question type: Inequality
Solution:
The inequality can be reduced to 1 inequality:
x <180 (1)
From inequality(1):
x < 180
The final solution set is :
x < 180Your problem has not been solved here? Please go to the Hot Problems section!