+0  
 
+1
368
3
avatar

3e^x + 12x = 0

Guest Mar 22, 2017
 #1
avatar+442 
+2

3 ex + 12x = 0         | - 12x

3 ex = -12x              | ÷ 3

ex = -4x                   | ÷ -4

-(ex/4) = x

x = -(ex/4)

MWizard2k04  Mar 22, 2017
 #2
avatar+26750 
+2

You need a graphical or numerical method to find the value of x here.

 

It's a good idea to draw a graph anyway to get a good initial estimate for an iterative numerical method:

 

 

So x ≈ -0.204

.

Alan  Mar 22, 2017
edited by Alan  Mar 22, 2017
 #3
avatar+442 
0

Thanks for the suggestion.

MWizard2k04  Mar 22, 2017

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