hey all i'm having alot of bother with these two questions. any comments would be very much appreciated!!!
show that the derivative of
arctan(a + x/1 -ax) is independent of a and explain why
use the substitution x-p = 1/u to show the integral of
1/(x-p)sqrt((x-p)(x-q)) = 2/(q-p) . sqrt((x-q)/(x-p))