Section 12 Higher Flashcards
Complete the circle theorem: ‘a radius meets a tangent at…’
A right angle
Write down the coordinates of the minimum point of the graph y = (x+a)² + b
(-a, b)
What does collinear mean?
On the same straight line.
If there are x ways to do task 1 and y ways to do task 2, how many ways are there to do both tasks in sequence?
xy
The transformation y = f(x) + a represents a translation of the graph y = f(x) by what vector?
0
a
All in a big bracket
What’s the value of sin 30?
Half
How do we find the composite function fg(x)?
Substitute g(x) into f(x)
If two events are mutually exclusive what’s P(A∩B)?
0
The transformation y = f(-x) represents a reflection of the graph y = f(x) in which axis?
y axis
Complete the circle theorem: “The perpendicular from the centre of a circle to a chord….”
Bisects the chord
Sketch y = tan x for -90 ≤ x ≤ 270
The odd curvy one that reaches towards infinity and has a period of 180 degrees
In a histogram how do you work out frequency density?
frequency density = frequency / class width