Hi
For the first one, you can try to show that for . For the second one, the ratio test may be helpful.
Not completely off-topic question : If do English speaking people say that is an approximation of ? Is there another way of saying this ?
Hi
For the first one, you can try to show that for . For the second one, the ratio test may be helpful.
Not completely off-topic question : If do English speaking people say that is an approximation of ? Is there another way of saying this ?