Say i have a matrix , is it correct if i do it this way , is 5 a scalar = 5I where I is an identity matrix ?
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Originally Posted by thereddevils Say i have a matrix , Mr F says: This makes no sense. Is this what the question said? Are you sure it didn't say ....? is it correct if i do it this way , is 5 a scalar = 5I where I is an identity matrix ? ..
Originally Posted by mr fantastic .. GIven a matrix And also given and i am supposed to deduce from this . so so and my problem is here .. the (A-5) part . However , i did what i showed in my previous post and managed to get the answers .
Why don't you just use the fact that If then ?
Originally Posted by Prove It Why don't you just use the fact that If then ? the question restricts me from doing that , it says hence deduce the inverse from that equation .
Originally Posted by thereddevils GIven a matrix And also given and i am supposed to deduce from this . so so and my problem is here .. the (A-5) part . However , i did what i showed in my previous post and managed to get the answers . Post multiply both sides by : .
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