Integral of ln x arcsin x dx

This is practically as complicated as solvable integrals get.

\int \ln x\arcsin x\,dx=x \ln x\arcsin x- \int x(\frac{\arcsin x}{x} +\frac{\ln x}{\sqrt{1-x^2}}) \,dx=x\ln x\arcsin x-x\arcsin x-\sqrt{1-x^2}-\int \frac{x\ln x}{\sqrt{1-x^2}} \,dx=x\ln x\arcsin x-x\arcsin x-\sqrt{1-x^2}+\ln x\sqrt{1-x^2}-\int \frac{\sqrt{1-x^2}}{x} \,dx=x\ln x\arcsin x-x\arcsin x-\sqrt{1-x^2}+\ln x\sqrt{1-x^2}+\ln(1+\sqrt{1-x^2})-\ln x-\sqrt{1-x^2}+C

=\boxed{x\ln x\arcsin x-x\arcsin x-2\sqrt{1-x^2}+\ln x\sqrt{1-x^2}+\ln(1+\sqrt{1-x^2})-\ln x+C}

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s