GCE AS and A Level MATHEMATICS FORMULA BOOKLET
GCE AS and A Level MATHEMATICS
FORMULA BOOKLET
From September 2017
? WJEC CBAC Ltd.
Issued 2017
Pure Mathematics
Mensuration Surface area of sphere = 4r 2 Area of curved surface of cone = r slant height
Arithmetic Series
Sn =
1 2
n(a + l) =
1 2
n
[2a
+
(n
1)d]
Geometric Series a(1 r n )
Sn = 1 r a
S = 1 r for | r | < 1
Summations
n
r2
1 6
n(n
1)(2n
1)
r 1
n
r3
1 4
n2 (n 1)2
r 1
Binomial Series
n r
r
n
1
n r
11
(a
b)n
an
n 1
a
n1b
n 2
a
n2b
2
n r
a
nr
b
r
bn
(n NN)
where
n r
nCr
n! r!(n r)!
(1 x)n 1 nx n(n 1) x2 n(n 1)(n r 1) xr ( x 1, n RR)
1.2
1.2r
Logarithms and exponentials e xln a a x
Complex Numbers
{r(cos i sin )}n r n (cosn i sin n )
The roots of
z n
1
are given by
2k i
z e n , for
k
0,1, 2,, n 1
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Maclaurin's and Taylor's Series
f (x) f (0) xf (0) x2 f (0) xr f (r) (0)
2!
r!
f (x) f (a) (x a) f (a) (x a)2 f (a) (x a)r f (r) (a)
2!
r!
f (a x) f (a) xf (a) x2 f (a) xr f (r) (a)
2!
r!
ex exp(x) 1 x x2 xr for all x
2!
r!
ln(1 x) x x2 x3 (1)r1 xr (1 x 1)
23
r
sin x x x3 x5 (1)r x2r1 for all x
3! 5!
(2r 1)!
cos x 1 x2 x4 (1)r x2r for all x
2! 4!
(2r)!
tan1 x x x3 x5 (1)r x2r1 (1 x 1)
35
2r 1
sinh x x x3 x5 x2r1 for all x
3! 5!
(2r 1)!
cosh x 1 x2 x4 x2r for all x
2! 4!
(2r)!
tanh1 x x x3 x5 x2r1 (1 x 1)
35
2r 1
Hyperbolic Functions cosh2 x sinh2 x 1 sinh 2x 2sinh xcosh x cosh 2x cosh2 x sinh2 x
cosh1 x ln{x x2 1}
(x 1)
sinh1 x ln{x x2 1}
t
anh1
x
1 2
ln 1 1
x x
( x 1)
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Trigonometric Identities sin(A B) sin AcosB cos Asin B
cos(A B) cos AcosB sin Asin B
t
an(A
B)
t an 1 t
A tanB an AtanB
(
A
B
(k
1 2
)
)
For
t
t
an
1 2
A:
sin A 2t , 1 t2
cos
A
1 1
t t
2 2
sin A sin B 2sin A B cos A B
2
2
sin A sin B 2cos A B sin A B
2
2
cos A cosB 2cos A B cos A B
2
2
cos A cosB 2sin A B sin A B
2
2
Vectors The resolute of a in the direction of b is a.b b
The point dividing AB in the ratio : is a b
The equation of a plane in Cartesian form is n1x n2 y n3z k
(b a).n
The perpendicular distance between two skew lines is D
, where a and b are
n
position vectors of points on each line and n is a mutual perpendicular to both lines.
The perpendicular distance between a point and a line is D ax1 by1 c , where the a2 b2
coordinates of the point are (x1, y1) and the equation of the line is given by ax by c .
The perpendicular distance between a point and a plane is D n1 n2 n3 k , where
n2 n2 n2
1
2
3
, , are the coordinates of the point and n1x n2 y n3z k is the equation of the plane.
Matrix transformations
Anticlockwise
rotation
through
about
O:
cos sin
sin cos
Reflection in the line
y (tan )x :
cos 2 sin 2
sin 2 cos2
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Differentiation
Function f (x) g(x) tan x sec x cot x cosec x sin 1 x
cos1 x
tan1 x sinh x cosh x t anh x sinh 1 x
cosh1 x
tanh1 x
Derivative f (x)g(x) f (x)g(x) ( g ( x)) 2 sec2x
sec x tanx cosec2 x cosecx cot x
1 1 x2 1 1 x2
1 1 x2 cosh x sinh x sech2 x
1 1 x2
1 x2 1
1 1 x2
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