Question

Помогите решить систему

Answer 1

$y=-cosx\\ (5\sqrt{cosx}-1)(6*-cosx-1)=0\\ 5\sqrt{cosx}=1\\ -6cosx=1\\\\ cosx=\frac{1}{25}\\ cosx=-\frac{1}{6}\\ x=arccos(\frac{1}{25})+2\pi\*n\\ x=arccos(-\frac{1}{6})+2\pi\*n\\ y=-cos(2\pi\*n-arccos(-\frac{1}{6}))\\ y=-cos(2\pi\*n+arccos(-\frac{1}{6}))$