+0  
 
0
584
3
avatar

if a/b+b/a=5 find a square/b square b square/ a square

Guest Jun 6, 2015

Best Answer 

 #2
avatar+27035 
+10

 Ratios squared:

.

Alan  Jun 6, 2015
 #1
avatar+7485 
+10

Hello anonymous!

 

a/b+b/a=5

a/b = x

x + 1/x = 5

x² + 1 = 5x

x² - 5x + 1 = 0

x1;2 = 2,5 +- √(2,5² -1)

x1 = 4,791287785

x2 = 0,208712153

 

a = 4,791287785 * b

a/b+b/a=5

4,791287785 * b / b + b / 4,791287785 * b = 5

4,791287785 + 1 / 4,791287785 = 5 

5 = 5

 

Help ! Where is my mistake ?

 

Regards  :- )

asinus  Jun 6, 2015
 #2
avatar+27035 
+10
Best Answer

 Ratios squared:

.

Alan  Jun 6, 2015
 #3
avatar+27035 
+8

You haven't made a mistake asinus, you just haven't completed the calculation of what was asked for (namely the squares of the ratios)!

 

I'll give you points anyway!

.

Alan  Jun 6, 2015

45 Online Users

avatar
avatar

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.