combi
Tn g n z 2.1 factorial
permutations whereordermatters
npr nip
r n 7 combinatorics selection whereorderdoesn'tmatter
r n y
pascals rule 1 21
here
n
Cry r 363
pigenhole principle
if nel objects are placed in n holes then some hole contains atleast 2
objects
inclusion exclusionprinciple
number of outcomes
total of outcomes
vectors
magnitude and direction
4 Iit yj component form
tut Tty magnitude of vector
a Ha a s unit vector
u r O 7 polar form
magnitude
I I it angle that u makes with in direction anticlockwise
converting to polar form
r Tty Cosa f or sino
f
converting from polar form
rcosoitrsinj
a b a b az bz scalar product
a b tall b cos o o 11 11
1050 magnitude of angle between two vectors
faith 91411,9
U vector resolute
off b s
u scalar resolute
gb
Tn g n z 2.1 factorial
permutations whereordermatters
npr nip
r n 7 combinatorics selection whereorderdoesn'tmatter
r n y
pascals rule 1 21
here
n
Cry r 363
pigenhole principle
if nel objects are placed in n holes then some hole contains atleast 2
objects
inclusion exclusionprinciple
number of outcomes
total of outcomes
vectors
magnitude and direction
4 Iit yj component form
tut Tty magnitude of vector
a Ha a s unit vector
u r O 7 polar form
magnitude
I I it angle that u makes with in direction anticlockwise
converting to polar form
r Tty Cosa f or sino
f
converting from polar form
rcosoitrsinj
a b a b az bz scalar product
a b tall b cos o o 11 11
1050 magnitude of angle between two vectors
faith 91411,9
U vector resolute
off b s
u scalar resolute
gb
