Помогите срочнноо!!!!!!!!!

Question

Помогите срочнноо!!!!!!!!!

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Answer 1

1
f(x)=1/2+cosx
f(3π/4)=1/2+cos(3π/4)=1/2-√2/2
f(2π/3)=1/2+cos(2π/3)=1/2-1/2=0
2
f(x)=tgx-√3
f(π/4)=tgπ/4-√3=1-√3
f(π/3)=tgπ/3-√3=√3-√3=0