Question

Prove that ( a + b) ( 1/a + 1/b) >4

Answer 1

Answer:

options: 1/a<1/b or 1/a>1/b

If 1/a<1/b then a*1/a<b*1/b yields 1<1 is false.

2.

a-b<0

1a−1b=b−aab=−(a−b)abR0

R is the relationship, here > or <.

a-b<0 thus -(a-b)>0. ab>0 yields 1a−1b>0 and so

Answer 2

Answer:

Hey mate

Step-by-step explanation:

Hope it will help you