Question

Which is an equation of the cosine function that has a period of π5 ?(1 point) Responses f(x)=cos(x5) f left parenthesis x right parenthesis equals cosine left parenthesis Start Fraction x over 5 End Fraction right parenthesis f(x)=cos(x10) f left parenthesis x right parenthesis equals cosine left parenthesis Start Fraction x over 10 End Fraction right parenthesis f(x)=cos(10x) f left parenthesis x right parenthesis equals cosine left parenthesis 10 x right parenthesis f(x)=cosx

Answer 1

The correct equation is f(x)=cos(5x).