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Prove that the square of an even or odd function is always even

Matt Farrel , 11 Years ago
Grade 10
anser 1 Answers
Arun Kumar

Last Activity: 11 Years ago

Hello Student,

f(-x)=f(x)
let g(x)= (f(x))^2
=>Replacing x by -x we get
g(-x)=(f(-x))^2
=> g(-x)=( f(x) )^2
=> g(-x)=g(x)
let f(x) is an odd function
then by def f(-x)= -f(x)
let g(x)=(f(x))^2
Replacing x by -x we get
g(-x)=(f(-x))^2
=>g(-x)=(-f(x))^2=(f(x))^2
=>g(-x)= (g(x))^2
prooved.

Thanks & Regards
Arun Kumar
Btech, IIT Delhi
Askiitians Faculty
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