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Hi good people!,

 

Please help me out here...Solve for x in the equation:

 

x13=41x3

what I did was raise everything to another power of 3,

 

x=641x9,

 

then multiplied by x9

 

x10=64,

 

then I'm stuck...

 Apr 29, 2018
 #1
avatar+985 
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Here is my solution. 

 

x13=y

 

y = 4 / y 

 

y^2 = 4

 

y = 2

 

x13=2

x = the cube root of 2

 

I hope this helped,

 

Gavin

 Apr 29, 2018
 #2
avatar+985 
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Never mind, I though the denominator was x13

 

 

My answer is wrong. 

 Apr 29, 2018
 #7
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GYanggg,

 

thank you for trying...I do appreciate..

juriemagic  Apr 30, 2018
 #3
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Solve for x:
x^(1/3) = 4/x^3

Raise both sides to the power of three:
x = 64/x^9

Cross multiply:
x^10 = 64        Take the 10th root of both sides
x = 2^(3/5)      or        x= (-2)^(3/5)               

These 2 solutions are the only real solution to balance the equation.

 Apr 29, 2018
edited by Guest  Apr 29, 2018
 #4
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divide maybe?

 Apr 29, 2018
 #5
avatar+118716 
+2

x^{1 \over3}=4{1 \over x^3}

 

 

 

x13=41x3x13=4x3x=43x9x10=43x=43/10x=23/5x=58x1.5157

 

this is the only positive real answer. 

I think our guest's negative answer also works.  It may not work with convention though

The cube root is in the question. so is a negative allowed.. I am not sure.

I think there are other complex answers as well.

 Apr 30, 2018
edited by Melody  Apr 30, 2018
edited by Melody  Apr 30, 2018
 #8
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Hi Melody,

 

a Million thank you's...I think your answer is closest to what I believe the answer should be. I do appreciate!

juriemagic  Apr 30, 2018
 #6
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One more try:

ax13=41x3

 

definition:

is 413=4+13 so is 41x3=4+1x3

 

x13=4+1x3         |  ×x3

x103=4x3+1

f(x)=4x3x103+10

 

The function has a minimum in P (0;1).
The function has no zero.

laugh  !

 Apr 30, 2018
edited by asinus  Apr 30, 2018
 #9
avatar+1124 
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asinus,

 

wow, this is something else!!..would never have thought of going that route. I do appreciate your help! Thank you..

juriemagic  Apr 30, 2018
 #12
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If you smoke some whackyweed you might think of going that route. 

Asinus is a natural space cadet, so he probably doesn’t need to smoke any.

Maybe it would help, if he did.

Guest May 1, 2018

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