Given that :
To prove :
How to do this prove ? thank you very much
Hello mandyn318
Welcome to Math Help Forum!This looks easy, but I think it's surprisingly tricky. I have a proof that assumes and . I'll leave it to you to check what happens if you take the negative values of the square roots.
To make it easier to read, then, I'm going to let:andSo:
and , taking the positive square rootsTherefore the original given equation:
can be written as:Now
...(1)
Grandad, from the original given
, multiplying top-and-bottom by
from (1)