AS Maths formula to be memorised

My teacher made this and i thought it would be usefull for others studying AS maths,

List of all the formula you need to remember for the AS maths, C1, C2 and S1

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AS Formula to be memorised
C1
General equation of a line y ­ y1 = m(x ­x1)
Gradient of a line joining two points m=
Midpoint of a line joining two points ( ,
Distance between two points
Gradient of normal = negative reciprocal of gradient of tangent
Roots of quadratic equation ax2 +bx + c = 0 x=
Two different (distinct) roots b2 ­ 4ac > 0
For real roots b2 ­ 4ac 0
Equal (repeated) roots b2 ­ 4ac = 0
No real roots b2 ­ 4ac < 0
Rules of Indices am an = am + n = (am)n = amn
Rules of surds
C2
Remainder Theorem : If f(x) is divided by (ax ­ b) the remainder = f (b/a)
Area of sector, in radians
Curved arc length, in radians s = r
Area of a triangle sin
Sine Rule
Trigonometry identities sin2 + cos2 =1
tan
General Equation of a circle, centre (a,b), radius r = r2
Logarithms logaxy = logax + logby
loga = loga x - logay
loga = n loga x
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AS Formula to be memorised
S1
Mean of a set of numbers =
Standard Deviation of a set of numbers = =
Mean of a frequency distribution =
Standard Deviation of a frequency distribution =
=
Variance = (sd)2 =
Interpolation
Median = lower class boundary + widthofinterval
Discrete data : Position of Lower quartile = th value and round it up, reading off the lower quartile
Discrete data : Position of Upper quartile = th value and round it up, reading off the upper…read more

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