Question

senx^2=senx ; resultado ta em [0, 2pi]

Answer 1

sen²x = senx

sen²x - senx = 0

senx (senx -1) = 0

senx = 0 =====> x'=π , x"=2π

(senx -1)=0 ==> senx=1 ==> x'"= π/2

S: { π/2 , π , 2π }