TÍNH A SIN4X 3 COS4X
4
. Tính A sin4
x 3 cos4
x. Group: https://www.facebook.com/groups/tailieutieuhocvathcs/3 sin
cos
b) Cho4
x
4
x
1
4
. Tính A sin4
x 3 cos4
x. Group: https://www.facebook.com/groups/tailieutieuhocvathcs/3 sin
cos
b) Cho4
x
4
x
1