Question

how to do
\[\int_{}^{}sec~x~~ dx\] using u-sub

Answer 1

oh.

Answer 2

textbook was saying to multiply it by sec x tan x/ sec x tan x

Answer 3

yes, keep it as sec x

Answer 4

i did that, but then didn't kno what to u-sub afterwards

Answer 5

multiply top and bottom by sec x + tan x

Answer 6

yeah that forgot the +
a bit tired

Answer 7

best thing multiply (secx+tanx) with Dr and Nr