Exam Revision Flashcards
The area under a speed-time graph represents…
Distance
The gradient of a speed-time graph represents…
Acceleration
The power 1/2 is the
Square root
The power 0 is always
1
To calculate the discriminant, find
b^2 - 4ac
If the discriminant is positive, the equation has … roots
2
If the discriminant is equal to 0, the equation has … roots
1
If the discriminant is negative, the equation has … roots
0
Force =
Pressure x Area
Area =
Force / Pressure
Pressure =
Force / Area
Speed =
Distance / Time
Time =
Distance / Speed
Distance =
Speed x Time
Density =
Mass / Volume
Mass =
Density x Volume
Volume =
Density / Mass
If the question involves opposite and hypotenuse use
sin
If the question involves opposite and adjacent use
tan
If the question involves adjacent and hypotenuse use
cos
To find a rate of change from a graph, find the
gradient
To find the gradient of a curved graph, first draw a
tangent
Exterior angles of any polygon add to
360
Angles in a triangle add to
180
Angles in a quadrilateral add to
360
Angles in a pentagon add to
540
To find the angles in a polygon with n sides, calculate
(n-2) x 180
The proper name for Z angles is
alternate angles
The proper name for C angles is
supplementary or co-interior angles
The proper name for F angles is
corresponding angles
Area of a circle is
pi x radius squared
Circumference of a circle is
pi x diameter
Frequency density =
frequency / class width
Frequency =
frequency density x class width
To estimate the answer to a calculation,
round each number to 1 significant figure before calculating
The maximum value of y=sinx and y=cosx is
1
The minimum value of y=sinx and y=cosx is
-1
The tan graph repeats every…
180
A sequence which adds/subtracts the same number each time is called
arithmetic / linear
A sequence where each term is multiplied by the same number to get the next term is called
geometric
A sequence with the same second differences is called
quadratic
A sequence where each term is the sum of previous terms is called
Fibonacci
