ok, but eq (1) say:
\frac{\partial{u}}{\partial{x}} + ( \partial w / \partial z) =0
so, I have evaluate all of the partial derviatives but How can I have eq (8) :( I do not understand !
I know it is linked with chemistry but I wanted to know its relationship with math
sory if my question was annoying
but I learned a lot from your answers and hints and I enjoy it
Thank you
please ... Is this true?! I took the second term in eq(1)
\partial w / \partial z
= ( \partial w / \partial \varphi ) . ( \partial \varphi / \partial \eta ) . ( \partial \eta / \partial z )
= (- \sqrt{b\nu} ) . ( \grave{\varphi} ) .( \sqrt{b/\nu} )
= -b \grave{\varphi}
Thank you for this hint...I will try it :) and read:
http://en.wikipedia.org/wiki/Chain_rule
https://www.physicsforums.com/library.php?do=view_item&itemid=353
From PDE to ODE ?! + research
Homework Statement
In the attached research, What are the steps that we work to transform the equation (1) to (8)
Homework Equations
(1) and (8)
The Attempt at a Solution
I know that they used similarity transformations but I do not know how to do...
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and I Found that:
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But I could not linked it with...
Thank you for your Answers and I appreciate it very much
and I am so sorry for my inattention unintentional
ok... can I change the question: relationship between Biomathematics and Femtosecond?! and DEs and Femtosecond ?!
I know that there is a relationship between the Femtosecond and...