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Period of |sin πx| = 1

Wolfram alpha :

enter image description here

So why this condition for Periodic function is not true?

f(x) = f(x + T)

Wolfram alpha :

enter image description here

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You need to evaluate

$$|\sin(\pi\cdot (0 + 1))|$$

and not

$$|\sin(\pi\cdot 0)+1|$$

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  • $\begingroup$ I commit egregious error. Maybe because i'm newbie in math. Thank You $\endgroup$ – HFDev Apr 11 '14 at 12:53
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You should put it $|sin(\pi(0+1))|$ You should replace $x$ by $x+1$. Check their graphs for better understanding

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