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Let ab=a+b+b+b+.... If 7g=9, find the value of g.

 Sep 9, 2018
 #1
avatar+6252 
+1

so you need to find g such that that infinitely nested square root is equal to 2

 

I showed you somthing similar earlier.

 

let the nested square root be x then

 

x=g+xx2=g+xx2xg=0x=1±1+4g2=21±1+4g=4±1+4g=3we need only consider the + case1+4g=94g=8g=2

 Sep 9, 2018
 #2
avatar+1246 
0

Thanks! I was a bti confused about the  sign.

Lightning  Sep 9, 2018

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