1.

\[\int_{0}^{\pi /4}{{}}\sec x\log (\sec x+\tan x)\,dx=\]

A. \[\frac{1}{2}{{[\log (1+\sqrt{2})]}^{2}}\]
B. \[{{[\log (1+\sqrt{2})]}^{2}}\]
C. \[\frac{1}{2}{{[\log (\sqrt{2}-1)]}^{2}}\]
D. \[\frac{1}{2}{{[\log (\sqrt{2}-1)]}^{2}}\]
Answer» B. \[{{[\log (1+\sqrt{2})]}^{2}}\]


Discussion

No Comment Found