Past Paper MISTAKES Flashcards
Make sure when adding argand to show
The parellogra
Remember in roots of polynomials, the order of signs!
Goes like - + - +, so if third, gonna be -!
That mod of something is the swaure root, but when you just swaure something
You add the sqaured
Remember the two things a determinant does herometrically (got it correct well done)
Volume or area multiplier
But also Orientation of points
If negative then reberses , if positbe preserves!
Remember proofs what to do
Don’t expand and make sure to write assume
What to remember for matrices and I and what not
AND REMEMBER TO RATIONALISE
Equate to the STUFF THEY GIVE IN QUESTION THEY MAKE HELLA EASY
READ A IF YOU GET TWO RESULTS AND DONT KNOW WHY, maybe a says it’s ABIVE don’t be a fraud
Remember to RATIONALISE
Just do it Chuck in calc you’re goof
Okay what to rememebr about getting more than one solution
If you think youredoing the right thing calm, all you have to do is go with it and you might get the same answer again so don’t worry, just go with it
APPARENTLY WE JUS KNOW THIS
For a matrix to be a REFLECTION, THE DETERMINANT IS -1
AND FOR IT TO BE A ROTATION IT GOTTA BE 1
Actually what should you do to interpret geometrically normally
FIND DET FIRST ALWAYS , bun parallel etc, jus do and say unique mark
Then interpret, saves a step Icl
MAKE SURE TO BRACKET YOUR MINUS SIGN BECAUSE THEN YOU GET WRINF ANDWER!AND MAKE IT
= to 0!
Damn somerimes the answer is just what you got
So don’t be afraid to put that down even tho more marks suggest elsewise
Don’t forget van split fractions - you were basically there! In proofing summations remember
Next term along is k+1
What is the significance of det being greater than 0
I guess I’m this case, more than 0 means orientation is preserved
Man make sure to give values for Z!
This is when you finding in graphs dont lack
