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Summary Maths Grade 12 IEB Notes

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These notes cover the IEB maths syllabus. These notes are based on the new edition of "Mind Action Series Mathematics Grade 12" Topics covered: - Cubic Polynomials - Differential Calculus - General Trigonometry - Trigonometry in Triangles - Analytical Geometry - Euclidean Geometry - Financial Mat...

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  • August 6, 2020
  • September 2, 2020
  • 43
  • 2020/2021
  • Summary

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MATHS
Grade 12



IEB

,
,
,
, Sequences and Series

Functions and Inverses

Cubic Polynomials

Differential Calculus

General Trigonometry
Trigonometry in
Triangles
Analytical Geometry

Euclidean Geometry

Financial Mathematics

Statistics
The Counting
Probability
Principle

, Sequences and Series
Chapter 1

General Rules Sigma

a = T1
n = Position (n∈ Ν
d = Constant Difference
Tn = Value of Term Number of terms = p – q + 1



T3 = S3 – S2
T5 = S5 – S4



Quadratic Cubic




Arithmetic Sequence Arithmetic Series

$
#$ = 2' + $ − 1 +
Tn = a + (n-1)d 2
$
#$ = (' + -)
2


Geometric Geometric
Sequence Sequence

'(/ $ − 1) !≠1
#$ =
Tn = ar !"# /−1
Conditions for
' Convergence:
#∞ =
1−/ −1 < ! < 1

, Functions and Inverses
Chapter 2

Function and Type Line of Symmetry

• Vertical Line Test:
y=x
• whether it is a function
• Horizontal Line Test:
• One-to-one function
• Many-to-one function
Inverse of one-to-one

*The opposite procedure of the
original function
Inverse of Exponential
Function Determining Inverse of one-to-one
functions
1. Swop x and y
*No restrictions necessary 2. Make y the subject
*Use table method to find a point 3. Rewrite in form 1 "% = …
*Need to make y subject of formula:
done using logarithms (logs)

1. Make y the subject using logs
2. Draw original and inverse
Inverse of Many-to-one


Determining Inverse of many-to-one
functions (Quadratic Function)
1. Use table method or intercepts
Expression: loga x defines only if: to draw original
• 0 < ' < 1 =/ ' > 1 2. For inverse: Make y the subject
(a cannot be negative, zero or 1) 3. ± 5 will not be a function ∴
• 5>0 78#9/:;9 <=>':$ (of original)
(x cannot be negative or zero) a) Situation 1: where 5 ≥ 0
b) Situation 2: where 5 ≤ 0
4. Remember to include inverse
over line of symmetry and write
restrictions

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