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OpenStudy (anonymous):
Is cos(1/(x+1)) ever undefined?
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OpenStudy (anonymous):
When x = -1
OpenStudy (anonymous):
But when I input that into my calculator it says cos(0)=1...is that still undefined?
OpenStudy (anonymous):
well, 1/0 is not equal to 0 actually so you can't say cos (1 / 0) = cos(0)
OpenStudy (anonymous):
1/0 = undefined
OpenStudy (anonymous):
you, are a genius.
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OpenStudy (anonymous):
thank you!
OpenStudy (anonymous):
haha, not a problem my friend...have fun!
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