ADD Maths Equations

Question 1

Equation of a circle.

Answer 1

(x-a)^2 , (x-a)^2 = r^2

Question 2

Trig identities Tan

Answer 2

Tan x = Sin x
———-
Cos x

Question 3

Trig identities Cos/Sin

Answer 3

Sin2x + Cos2x = 1

Question 4

P(A given B)

Answer 4

P(A given B) = P(AnB)
————-
P(B)

Question 5

P(A or B)

Answer 5

P(A or B) = P(A) + P(B) - P(AnB)

Question 6

P(A and B)

Answer 6

P(A and B) = P(A) x P(B)

Question 7

Purmutations

Answer 7

nPr = n!
——-
(n-r)!

Question 8

Combinations

Answer 8

nCr = n!
———-
r! (n-r)!

Question 9

P(r success)

Answer 9

P(r success) = nCr p^r q^n-r

Question 10

Log xy

Answer 10

Log xy = log x + log y

Question 11

Log (x/y)

Answer 11

Log (x/y) = Log x - Log y

Question 12

Log x^n

Answer 12

Log x^n = n log x

Question 13

Log Rules:
__
Log n_/x

Answer 13

Log Rules:
__
Log n_/x = log x ^1/n = 1/n log x

Question 14

Loga1

Answer 14

Loga1 = 0

Question 15

Log a A

Answer 15

Log a A = 1

Question 16

Log Rules:
1
Log ——
x^n

Answer 16

Log Rules:
1
Log —— = -n log x
x^n

Question 17

y = mx + c (logs)

Answer 17

logy = xloga + logK

Question 18

How do you find the stationary turning point?

Answer 18

Let dy/dx = 0

Question 19

SUVAT

V U A T

Answer 19

v = u + a t

Question 20

SUVAT

V U T S

Answer 20

s = (v-u)t
———
2

Question 21

SUVAT

A T U S

Answer 21

s = ut + 1/2 a t^2

Question 22

SUVAT

U V A S

Answer 22

v^2 = u^2 + 2as