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 I need some help for this thing 3^(3b*2+1)+7^(b-1)=10

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I need some help for this thing 3^(3b*2+1)+7^(b-1)=10

what is b i am getting: 1/6 but that is not right.

Many thanks

 Nov 4, 2018

Best Answer 

 #4
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0

The computer finds it by using Newton-Raphson iteration and interpolation method. Use this online calculator to find b for you:  https://www.johndcook.com/interpolator.html

 Nov 4, 2018
edited by Guest  Nov 4, 2018

5+0 Answers

 #1
avatar+75 
+1

Hmm, 

I'm not sure.

 Nov 4, 2018
 #2
avatar
0

b=1 / 5.56962077581

 Nov 4, 2018
 #3
avatar+7 
+1

Can you send me the way?

Quad1981  Nov 4, 2018
 #4
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0
Best Answer

The computer finds it by using Newton-Raphson iteration and interpolation method. Use this online calculator to find b for you:  https://www.johndcook.com/interpolator.html

Guest Nov 4, 2018
edited by Guest  Nov 4, 2018
 #5
avatar+37146 
0

WolframAlpha gets the same answer:

b=.179545...

https://www.wolframalpha.com/input/?i=3%5E(6b%2B1)+%2B+7+%5E(b-1)%3D10

 Nov 4, 2018

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