N= [i,1;-1,i](adsbygoogle = window.adsbygoogle || []).push({});

I used this theorem: N N^{-1}= I_{n}

Thus:

[i,1;-1,i]*[a,b:c,d]=[1,1;1,1]

I then found:

ia+c=1

ib+d=1

-a+ic=1

-b+id=1

Can I conclude an inverse does not exist. If so, how?

If not, what do I do?

Thanks,

Frank

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

Dismiss Notice

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!

# Homework Help: Does the following matrix have an inverse?

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