Question

find mean proportional of x+y upon x-y, x²-y² upon x²y³​

Answer 1

Answer:

(x + y)/xy

Step-by-step explanation:

mean proportional of a and b is given as √(ab).

here a = (x + y)/(x - y) and b = (x² - y²)/x²y²

so, mean proportional of given expressions is ...

=

we know from algebraic identity,

p² - q² = (p - q)(p + q)

so, (x² - y²) = (x - y)(x + y)

=

=

=

hence, mean proportional of x+y/x-y, x²-y²/x²y² is (x + y)/xy