Solve the equation for all real values of x. sec2x + 2secx = 0
1 answer:
Given :
To Find :
All real value solution of given equation.
Solution :
Simplifying given equation, we get :
sec x( sec x + 2 ) = 0
sec x = 0 and (sec x + 2) = 0
For, sec x = 0 :
x = not defined.
For, (sec x + 2) = 0 :
cos x = -1/2
x = cos⁻¹( -1/2 ) = 2π/3
Therefore, general solution is ( 2nπ ± 2π/3 ), n ∈ Z⁺ .
You might be interested in
The formula for average rate of change is given by:
=(27-27)/6
=0/0
=0
Answer: average rate of change is 0
Answer:
The variance estimate of this activity is 4.
Step-by-step explanation:
Given information: One of the activities on the critical path has
Optimistic time = 5 minutes
Most likely time = 6 minutes
Pessimistic time = 17 minutes
The variance estimate of a activity is
where, is pessimistic time of that activity and
is optimistic time of that activity.
The variance estimate of the given activity is
Therefore the variance estimate of this activity is 4.