Period of f(x)= sin^4 x +cos^4 x is

Answers (1)

Solution:`  We have ,   f(x)=sin^4x+cos^4x

                 \ \ Rightarrow hspace1cmsin^4x 
ightarrow T_1=fracpi1\ \ Rightarrow hspace1cmcos^4x
ightarrow T_2=fracpi1\ \ Rightarrow hspace1cmT=fracLCM hspace0.2cmof hspace0.2cm pi HCF hspace0.2cmof hspace0.2cm 1=pi

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