Hi all,(adsbygoogle = window.adsbygoogle || []).push({});

I have a suspicion this may be obvious but have lookd and can't seem to obtain the correct answer,

Can somone please explain the steps required to prove

ABC^TA^-1=CB

where C^T is the transpose of C and A^-1 the inverse of A. Matrices B and A are covariance matrices and thus may be considered symmetric if that helps

Thanks in advance for some direction

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Prove ABC^TA^-1=CB

**Physics Forums | Science Articles, Homework Help, Discussion**