Toán Lớp 11: Giúp em với:
4cos^2 3x-3=0;
Sin^2 3x=1/4;
6cos^2 x+cosx-1=0;
4cos^2(x+π/6)-1=0(sử dụng ct hạ bậc)
Leave a reply
Register Now
Login
Lost Password
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Toán Lớp 11: Giúp em với:
4cos^2 3x-3=0;
Sin^2 3x=1/4;
6cos^2 x+cosx-1=0;
4cos^2(x+π/6)-1=0(sử dụng ct hạ bậc)
Comments ( 1 )