Loading [MathJax]/jax/output/SVG/jax.js
 
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avatar+9675 

What's ddxxx?

 Aug 17, 2016

Best Answer 

 #1
avatar+33654 
+10

As follows:

 

derivative

.

 Aug 17, 2016
 #1
avatar+33654 
+10
Best Answer

As follows:

 

derivative

.

Alan Aug 17, 2016
 #3
avatar+9675 
0

Thanks Alan :D

MaxWong  Aug 17, 2016
 #2
avatar+118703 
0

Thanks Alan,

I still find these tricky ://

 Aug 17, 2016

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