find the period of these functions

spartas

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Sep 29, 2015
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i need some answers but detailed if you can help me.

find the period of these functions:

a) f(x)=sinx+cosx
b) f(x)=sin^4x+cos^4x
c) f(x)=ln(cosx)
d) f(x)=sin4x+sin6x
 
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i need some answers but detailed if you can help me.

find the period of these functions:

a) f(x)=sinx+cosx
b) f(x)=sin^4x+cos^4x
c) f(x)=ln(cosx)
d) f(x)=sin4x+sin6x
What are your thoughts?

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