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Flashcards in C1 Deck (16):
1

perpendicular or normal

do negative recipricol of gradient

2

tangent

keep gradient the same

3

find the gradeitn of a line passing between 2 points

y1-y2/x1-x2

4

find the point of intersection

solve 2 graphs as simultaneous equations to find coordinates

5

2 real distinct routes
2 points of intersection
kine intersects the circle

b^2 - 4ac > 0

6

one repeated / real root
1 point of intersection
kine is a tangent to the circle

b^2 - 4ac = 0

7

no real roots
no points of intersection
line fails to meet the circle

b^2 - 4ac < 0

8

vertex of (x-p)^2+q and line of symmetry

(p,q)
x=p

9

equation of a circle with centre (a,b)

(x-a)^2 + (y-b)^2 = r^2

10

if value of dy/dx is positive at x=a

then y is increasing at a

11

if the value of dy/dx at x=a is negative

then y is decreasing at x=a

12

stationary when

dy/dx = 0

13

minimum if

d^2y/dx^2 > 0

14

Volume of a cylinder

V = pie r^2 h

15

Curved surface area of a cylinder

2 pie r h

16

Area of circle

Pie r^2