Найдите угол наклона кривой в заданной точке.
У = Sin⁴x - Cos⁴x =(Sin²x - Cos²x)(Sin²x + Cos²x)= Sin²x - Cos²x = -Cos2x y = - Cos2x y' = 2Sin2x y' = 2Sin(2*π/12) = 2*Sinπ/6 = 2*1/2 = 1 = tgα, α = π/4
Tga=y`(x0) y=-cos2x y`=2sin2x y`(π/12)=2sinπ/6=2*1/2=1 tga=1 a=π/4