HSC X Task 1 Flashcards
1
Q
A
1
Q
A
2
Q
the shortest distance of a point to a line is
A
the perpendicular distance from the point to the line
3
Q
A
4
Q
projecting a onto b
A
5
Q
proj length is just
A
the scalar projection x the magnitude of the vector
6
Q
how to find the unit vector in that direction?
A
divide that vector X with the (scalar) magnitude of vector X
7
Q
A
8
Q
The Binomial Theorem
A
9
Q
n choose 0 is equal to
A
n choose n which is equal to 1
10
Q
n choose 1 is equal to
A
n choose (n - 1) which is equal to n
11
Q
n choose 2 is equal to
A
n choose (n - 2) = 0.5n(n-1)
12
Q
some particular values for n choose r
A
13
Q
dot product 2 diff formulas
A
14
Q
projection of u on x
and its length
A
15
Q
identities in pascal’s triangle
A
16
Q
prove
A
