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Mathematics 10 Online
OpenStudy (anonymous):

another double integral D:

OpenStudy (konradzuse):

LETS DO THIS!

OpenStudy (anonymous):

\[double \int\limits 1/(lnx )\] dx dy when e^y <x < 2 and 0 < y < ln2 sorry idk how to type it properly lololo :(

OpenStudy (konradzuse):

\[\int\limits_{e^y}^{2} \frac{1}{\ln(x)} dx \]???

OpenStudy (anonymous):

yeah! and on the outside \[\int\limits_{0}^{\ln2} \] !!!

OpenStudy (konradzuse):

so lets solve the first part first. What is the integral of 1/ln(x)

OpenStudy (anonymous):

ln(lnx) ?

OpenStudy (sirm3d):

ah, it's \[\iint_R \frac{1}{\ln x} dA\] over the region \[e^y<x<2, 0<y<\ln 2\]

OpenStudy (anonymous):

yes!!

OpenStudy (sirm3d):

|dw:1358722093157:dw|

OpenStudy (konradzuse):

R what? I'm konfused... I guess I will learn something now.

OpenStudy (anonymous):

what is that ?

OpenStudy (sirm3d):

|dw:1358722689231:dw| \[\Large \iint_R\frac{1}{\ln x} \mathrm dA=\int_{x_L}^{x_R}\int_{y_B}^{y_T}\frac{1}{\ln x} \mathrm dy \mathrm dx\]

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