In this problem, we are going to use five different ways to solve the following indefinite integral:
I=\int (dx)/(x\sqrt(x^(2)-1))
You will get five different answers by using these five methods. This is normal in computing indefinite integrals since they are represented by any antiderivative of the integrand plus a constant. Because the choice of antiderivatives is arbitrary and any two antiderivatives differ only by a constant, it's possible to see that different methods produce different representations of the antiderivatives. Hint: notice that the domain of your integrand is
(-\infty ,-1)\cup (1,\infty )
. In some parts, you may need to consider the two different cases:
x>1
and
x<-1
. (d) Use the
u
-sub with
u=x-\sqrt(x^(2)-1)
to compute this integral. (e) Use the
u
-sub with
u=(x-1)/(\sqrt(x^(2)-1))
to compute this integral.