Mèo Charlie
Senior Member
Tìm Giá Trị Chính Xác của Biến x
Ta có Nghiệm
https://www.wolframalpha.com/input?...17)))+-+8+sqrt(2+(17+++sqrt(17))))))))-4pi/17
https://www.wolframalpha.com/input?i=arccos(4pi/17+x)=cos(4pi/17)-x
Ta có Nghiệm
https://www.wolframalpha.com/input?...17)))+-+8+sqrt(2+(17+++sqrt(17))))))))-4pi/17
https://www.wolframalpha.com/input?i=arccos(4pi/17+x)=cos(4pi/17)-x