Question

u^3=xyz,1/v=1/x+1/y+1/z,w^2=x^2+y^2+z^2 then calculate d(u,v,w)/d(x,y,z)
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Answer 1

Answer:

The lowest common multiple of 2, 3 and 5 is 30.

Replace x, y and z with the number required to create the inverse of that ratio in 30ths

In this case x = 15, y = 10 and z = 6.

Alternatively, as it is the inversion just multiply the other two ratios together.

x = 3 * 5 = 15

y= 2 * 5 = 10

z= 2 * 3 =6

Either way:

1/15 : 1/10 : 1/6 = 2 : 3 : 5