# IB Maths Studies SL Review Notes

Simple IB Maths Studies SL review notes with what symbols mean, when to use triangle equations, calculator work for TI-84(+) (Texas Instruments), logic definitions, etc.

It mainly consists of symbols that need to be memorised, a couple equations that are not in the booklet, and also how to achieve some answers from the calculator (specific to the TI-84 only).

Maths Studies is not a priority for most people, so I took the liberty to create this simple guide that hopefully will help you on your IB Exams for Maths.

I am a student, not a teacher.

If there are any suggestions to add to this general review, or someone would like a step-by-step for a topic under Maths Studies SL they do not understand, please message me.

- Created by: Vickie
- Created on: 22-03-13 21:34

First 341 words of the document:

Math Studies

Remember to write out the whole number, from the calculator and not to round to 3 s.f. (unless stated

something else) until the end.

When to use:

SohCahToa: Only for right angle triangles

Sine Rule: Not for right angle triangles

o When given a side length to a corresponding angle, and one other side or angle

Cosine Rule: Not for right angle triangles

o When looking for a side: two sides and an angle in between

o When looking for an angle: three sides

Symbols

Meaning Examples

N All natural, whole numbers, only positive, not including zero 1, 2, 3, 4, 10, 11, 134, 824

Z All integers, whole numbers, positive and/or negative 5, 4, 1, 0, 2, 4, 6

All real numbers, can be any number, negative or positive,

R 6.4358203948574, 5, 3, ¼

rational or irrational

All rational numbers. Numbers that can be put in a perfect ¼, 3, 54, ½, 9

Q

fraction, or whole integers, can be negative or positive

Logic Symbols

¬ Negation

And, conjunction

Or, one or the other,

or both

Or, one or the other,

cannot be both

Therefore, thus

Logic Definitions

Using the example statement: If the orange is sweet, then I will eat it.

Converse: Switched backwards

o Ex: If I will eat it, then the orange is sweet

Inverse: Negation of both

o Ex: If the orange is NOT sweet, then I will NOT eat it

Contrapositive: Inverse + Converse, negation of both, and switched

o Ex: I will NOT eat it if the orange is NOT sweet.

Other Symbols

An element of

Not an element of

A subset of

Union, what both have together

Intersection, only what both have in common

Q1 Lower quartile

Q3 Upper Quartile

ox Standard Deviation

f'(x) F prime of x

May IB Exam 2013: Math Studies SL Exam

Afternoon on May 9th (Thursday)

Morning on May 10th (Friday)

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