Row reducing a matrix A to RREF can be packed into one matrix.
Every row operation is a matrix multiplication. Stack them and you get an elimination matrix E where E·A = RREF.
If A is square and invertible, E = A⁻¹, so A⁻¹·A = I.
REF in 3 steps:
1. Top-left becomes 1 (swap or scale rows)
2. Each pivot sits right of the one above
3. Zeros below every pivot
RREF = REF + zeros above every pivot too.
@joinHandshake Despite several attempts to connect and submitting support tickets, I am still not receiving assistance from the Handshake team. It feels quite unfair that my account was blocked as a duplicate without warning. All my effort has been wasted so far.
@joinHandshake Despite several attempts to connect and submitting support tickets, I am still not receiving assistance from the Handshake team. It feels quite unfair that my account was blocked as a duplicate without warning. All my effort has been wasted so far.
I got stuck on Chapter 2 - Linear Algebra due to technical terms, so I:
- Extracted the chapter using 'I❤️pdf'
- Input the pdf into 'Claude' with a prompt
I've completed half the chapter quickly and will finish soon!
@joinHandshake my Handshake AI account got flagged as a “duplicate” after the login switch. I’ve only ever had one email. Payments for completed work are pending and I’m locked out. Please help. Ticket filed, happy to DM details.
@bhash@bhash Hey I've tried calling the customer care number (080 3311 3311) to get a help regarding my vehicle breakdown, but no one is picking up the call!
This is truly unacceptable for a customer, it has been a month and my issue isn't resolved yet!
@OlaElectric
Ola S1 (2023) dead for days. Ola customer care not answering calls, no engineer response, and my area's service centre is shut. Requesting @OlaElectric to inspect the scooter, arrange RSA/pickup, and give a resolution timeline.
Reg: OD23P2457 | Jharsuguda, Odisha
@JioCare Sorry, I was working on a Python project 'Internet speed complaint bot'. I was just testing it out using automated software and the message you see was sent out by a bot during the testing.
I wasn't hoping you will receive this message, lol😅. Btw, my internet speed is fine!