If 2 x </msup> = 3 y </msup> = 6 &#x2

Hailie Blevins

Hailie Blevins

Answered question

2022-06-27

If 2 x = 3 y = 6 z and x , y , z 0 then prove that:
1 x + 1 y + 1 z = 0
I have tried starting with taking logartithms, but that gives just some more equations.
Any specific way to solve these type of problems?

Answer & Explanation

rioolpijpgp

rioolpijpgp

Beginner2022-06-28Added 19 answers

2 x = 3 y = 6 z = k say, then 2 = k 1 x , 3 = k 1 y , 6 = k 1 z now can you go on?
then k 1 z = 6 = 2 × 3 = k 1 x × k 1 y = k 1 x + 1 y
arridsd9

arridsd9

Beginner2022-06-29Added 12 answers

2 x = 3 y = 6 z = k
so
x = log 2 k
y = log 3 k
z = log 6 k
so
1 x + 1 y + 1 z = log k 2 + l o g k 3 log k 6
= log k 2 × 3 6
= 0

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