Find the number of real roots of the equation 2πarccosx=√1−x2+1.
Problem
Source: Ukraine 1998 Grade 11 P5
Tags: algebra, equation, equations, trigonometry, trigonometric function
Source: Ukraine 1998 Grade 11 P5
Tags: algebra, equation, equations, trigonometry, trigonometric function
Find the number of real roots of the equation 2πarccosx=√1−x2+1.