## 75 Reputation

11 years, 115 days

## Works perfectly but ......

Thank you

@tomleslie

Works perfectly but i have some problem with a system of equations , i dont know what is wrong with thatpp.mw

## problem in plot...

@vv Thank you but the right diagram by analytical approach is very different. What's the point?

## Maxwell version...

@John Fredsted

I used your method for maxwell equation what do think about that?

I think i made mistake !

maxwell.mw

## smaller result...

There is a generic problem in both of them(ss.mw and jj.mw)  i mean when you put H^2=H^3=..=0 (or g^2=..=0) you expect to have smaller result but with your method you will have very long resul.

## @ecterrab  Dear Edgardo in JJ.mw i...

Dear Edgardo in JJ.mw i want to eliminate H(r)^2 ,H(r)^3,... but with frontend(series ,[ ]) i cant do it , please show me

## Perfect...

Thank you John. its perfect.

How to use your method for Maxwell equation ?

JJ.mw

## goody way but...

its a good way but  derivatives of g(r) and h(r) are presented in expr

## didnt work...

i used frontend(series, [(17), g(r), 2]) but did not work.

JJ.mw

## assigning values to the components...

Yes i mean assigning values to the components of k , but i can not do it , even i can not do k_[]

## some questions...

I have some questions , How can i put k components in 17 and how can i eliminate non-linear terms like g(r)^2 from 17 and how can we do this process for maxwell equation ?

small_perturbations_(reviewed).mw

for simplisity i consider phi(x)

## Perfect...

thank you.

This is the solution i was chasing.

## Dear @ecterrab  I think compo...

Dear @ecterrab

I think components of the extrinsic curvature are not equal to zero

https://physics.stackexchange.com/questions/144164/gibbons-hawking-york-ghy-boundary-term-for-schwarzschild-metric

## transform functions...

@John Fredsted yes I want to know what transform functions can provide this explicit forms. can maple find these transform functions?

## M(x,t) and J(x,t)...

first of all thanks for your attention ,

what we are looking for is finding the transform function between coordinate systems. in our case , we have a metric with coordinates (M,J) and have another metric with coordinates ( t,x) but don't know M(x,t) and J(x,t) .

changecoor.mw

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