• Congratulations to the Class of 2024 on your results!
    Let us know how you went here
    Got a question about your uni preferences? Ask us here

Search results

  1. I

    harder 3 Unit Inequalities question

    Another method to prove 1/a + 1/b + 1/c >= 9 is to show a+1/a>=2 and similarly a/b+1/(a/b)>=2 (1/a + 1/b + 1/c)(a+b+c)=a/a+a/b+a/c+a/b+b/b+b/c+c/a+b/c+c/c>=3+2+2+2>=9
Top