IB DP Maths: AA HL復(fù)習(xí)筆記1.4.1 Proof
What is proof? Proof is a series of logical steps which show a result is?true?for all specified numbers ‘Seeing’ that a result works for a few numbers is not enough to?show?that it will work for al...
IB DP Maths: AA HL復(fù)習(xí)筆記1.3.5 Compound Interest & Depreciation
What is compound interest? Interest is a small percentage paid by a bank or company that is added on to an initial investment Interest can also refer to an amount paid on a loan or debt, however IB...
IB DP Maths: AA HL復(fù)習(xí)筆記1.3.4 Applications of Sequences & Series
Many real-life situations can be modelled using sequences and series, including but not limited to: patterns made when tiling floors; seating people around a table; the rate of change of a populati...
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IB DP Maths: AA HL復(fù)習(xí)筆記1.3.3 Geometric Sequences & Series
What is a geometric sequence? In a?geometric sequence, there is a?common ratio,?r,?between consecutive terms in the sequence For example, 2, 6, 18, 54, 162, … is a sequence with the rule?‘start at ...
IB DP Maths: AA HL復(fù)習(xí)筆記1.3.2 Arithmetic Sequences & Series
?What is an arithmetic sequence? In an?arithmetic?sequence,?the difference between consecutive terms in the sequence is constant This?constant difference?is known as the?common difference,?d,?of th...
IB DP Maths: AA HL復(fù)習(xí)筆記1.3.1 Language of Sequences & Series
What is a sequence? A?sequence?is an ordered set of numbers with a rule for finding all of the numbers in the sequence For example 1, 3, 5, 7, 9, … is a sequence with the rule?‘start at one and add...
AQA A Level Physics復(fù)習(xí)筆記5.2.2 Resistance in a Thermistor
Temperature & Resistance All solids are made up of vibrating atoms The higher the temperature, the faster these atoms vibrate Electric current is the flow of free electrons in a m...
AQA A Level Physics復(fù)習(xí)筆記5.2.1 Resistivity
Resistivity All materials have some?resistance?to the flow of charge As?free?electrons?move?through a metal wire, they collide with ions which get in their way As a result, they?transfer?som...
