We've updated our
Privacy Policy effective December 15.
Please read our updated Privacy Policy and tap
Graph
Hide Plot »
Frequently Asked Questions (FAQ)
What is the general solution for 4cos^2(x)-4cos(x)-1=0 ?
- The general solution for 4cos^2(x)-4cos(x)-1=0 is x=1.77941…+2pin,x=-1.77941…+2pin