SOLUTION: Solve the given equation over the interval [0,2pi): 2cos^2x+cos x+15=0

Question 963180: Solve the given equation over the interval [0,2pi): 2cos^2x+cos x+15=0
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Substitute

Graphing the equation,

As you can see the graph never crosses the x-axis.
There are no solutions.
RELATED QUESTIONS
Please solve the equation for the interval [ 0, 2pi ]: {{{2cos^2(2x)-cos(2x)=0}}}... (answered by ikleyn)

Solve on the interval [0, 2pi] 2cos*2x=1 (answered by Theo)

1.Solve the equation 2cos x-1=0, 0 (answered by stanbon)
Please explain how to solve the equation for exact solutions over the interval [0, 2pi). (answered by Fombitz)
Solve the equation for x, on the interval 0 is less than or equal to x and 2pi is greater (answered by Alan3354)
Solve 2cos x+2cos 2x=0 on the interval... (answered by Joker)
solve cos x/3 - sin x/3 = 0 over the interval [0,... (answered by ikleyn)
Solve the equation on the interval 0 (answered by ewatrrr)
Given: cosθ= -3/5 and sinθ > 0. Find the exact value of cos θ/2. solve (answered by lwsshak3)