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OpenStudy (anonymous):
How do I prove: x-Sin(x) is always increasing for x>0 ?
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jimthompson5910 (jim_thompson5910):
Take the derivative and show that the derivative is always positive for x > 0
OpenStudy (anonymous):
Yeah I took the derivative but how do that show that it's always increasing?
jimthompson5910 (jim_thompson5910):
y = x - sin(x) y' = 1 - cos(x) ... you got this right?
OpenStudy (anonymous):
Never mind. I think I got it.
jimthompson5910 (jim_thompson5910):
alright great
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