#How does the integration of lnsinx work

12 messages · Page 1 of 1 (latest)

raw gulch
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I need help with this one, thanks

surreal sentinelBOT
cyan plaza
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If you want to integrate between 0 and pi/2, you can u sub to get the integral of ln cos instead, then add both to get ln((sin 2x) /2) . Finally, split the ln and notice that ln(sin) is symmetrical along x=pi/2

wooden bronze
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substitute x as sin-1 t

raw gulch
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Without the limits is a lot harder right?

steady dust
digital sorrel
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with limits, we can work out with kings rule or smth

covert vessel
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ln sinx has no antiderivative that uses elementary functions

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your best bet is to just do a reimann sum with very small intervals

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or have a calculator do it for you

raw gulch
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Right, thanks