Simplify SiNx + cosx + sinxcosx to get the maximum value

Simplify SiNx + cosx + sinxcosx to get the maximum value

SiNx + cosx + sinxcosx = (SiNx + cosx) + [(SiNx + cosx) &# 178; - 1] / 2 = (1 / 2) (SiNx + cosx) &# 178; + (SiNx + cosx) - 1 / 2 = (1 / 2) [(SiNx + cosx) + 1] &# 178; - 1 because SiNx + cosx = √ 2Sin (x + π / 4) ∈ [- √ 2, √ 2] SiNx + cosx = - 1, the minimum value of the above formula is - 1sinx + cos =