AS pure

Question 1

Matrix for reflection in y axis

Answer 1

Question 2

matrix for reflection in x axis

Answer 2

Question 3

matrix for reflection in line y=x

Answer 3

Question 4

matrix for reflection in line y=-x

Answer 4

Question 5

matrix for reflection in plane x=0

Answer 5

Question 6

reflection in plane y=0

Answer 6

Question 7

reflection in plane z=0

Answer 7

Question 8

rotation anti-clockwise about the x axis

Answer 8

Question 9

rotations anti-clockwise about y axis

Answer 9

Question 10

rotation anti-clockwise about the z axis

Answer 10

Question 11

rotation matrix 2x2

Answer 11

Question 12

What is an assumption for most volumes of revolution questions?

Answer 12

That the thickness of the bowl/glass is neglible

Question 13

How can you tell if something lies on a plane

Answer 13

If something has a direction vector that is normal to the plane then it lies on the plane

Question 14

What does AA equal if A is a self inverse

Answer 14

Identity matrix

Question 15

What do you do when you have a circle and a line equation

Answer 15

Plug the line equation into the circle equation

Question 16

How to find determinant

Answer 16

ad-bc

Question 17

What does the det of a matrix equal 2x2

Answer 17

Area scale factor so root in linear scale factor

Question 18

Why could a mountain not be modelled as a plane

Answer 18

As it is not flat