August 24, 2021
Speed - Time Graphs
- Acceleration ⟶ find positive gradient of the line, m/s²
- Deceleration ⟶ find negative gradient, m/s²
- Horizontal line above 0 m/s² = Constant Speed, m/s
- Distance = Area under the line
Estimation of Area under the curve
• Concaving curve = underestimate
• Convex curve = overestimate
Equation of a Circle
- x² + y² = r²
- Centre = (a,b) ⟶ r² = (x - a)² + (y - b)²
- Radius cannot be a negative value.
When it comes to IGCSE/GCSE Maths, do you remember which direction does a graph move?
Transformations of graphs, y=f(x)
Inside bracket = x axis
in vector, a = inverse the sign in the bracket.
Outside bracket = y axis
in vector, a = same as it is outside the bracket.
That's the end of the topic!
Drafted by Bonnie (Mathematics)