## 65 Reputation

2 years, 210 days

## @vv  Your suggestion worked very w...

Thank you so much!

## @ecterrab  As always, perfect! Th...

As always, perfect!

Thank you very much!

## @ecterrab  You are absolutely righ...

You are absolutely right! Thank you very much!

## @Torre  You are completely right! ...

You are completely right! Thanks a lot for your help!

## @Kitonum  Got it! I would like to ...

Got it! I would like to thank you for your help. I think there is a bug in 2-D math input

See ya!

## @Kitonum  I tried to use your tip ...

I tried to use your tip but it don't worked.

## @Kitonum  Helped me a lot! Thanks ...

Helped me a lot! Thanks for your help!

## @Preben Alsholm  Sure! -sqrt(-(2*...

Sure!

-sqrt(-(2*(-r/(-r+2*M))^eta*M-(-r/(-r+2*M))^eta*r)/r)*X*sqrt(-(-(-r+2*M)/r)^eta*r/(-r+2*M))/f

or

simplification.mw

## @vv You are amazing! Thank you very much...

@vv You are amazing! Thank you very much!

I would like to thank everyone for their support!

## @Rouben Rostamian  Sorry! Here is m...

@Rouben Rostamian  Sorry! Here is my code:

I know de matrix U but I can't to find the matrix U

## @_Maxim_  Sorry, I didn't see ...

Sorry, I didn't see your comment! I put here the matrices C and M.

## @acer  Thanks for your help! I ca...

I can't apply your suggestion to my problem. The matrices M and C are the following

By the way, I know the matrix U

The point is: I need to reproduce this case to apply in another case.

Unfortunately, the matrix U is a unknown matrix. It isn't numeric matrix.