Mathematical problem y = (2 λ sinx-1) (2 λ cosx + 1) Find the function y = (2 λ sinx-1) (2 λ cosx + 1), {λ is not equal to 0, and 0 is greater than or equal to X and less than π} Maximum value of

Mathematical problem y = (2 λ sinx-1) (2 λ cosx + 1) Find the function y = (2 λ sinx-1) (2 λ cosx + 1), {λ is not equal to 0, and 0 is greater than or equal to X and less than π} Maximum value of

Y = 2m ^ 2sin2x-1 + 2m (SiNx cosx)
=2m ^ 2sin2x-1 + 2m root (1-sin2x)
=2m ^ 2 * (1-T ^ 2) - 1 + 2Mt (substitution) (0