Inverse Functions What is an inverse function? An inverse function is the opposite to the original function An inverse function is denoted by The inverse of a function only exists if the function i...
Composite Functions What is a composite function? A composite function is where one function is applied after another function The ‘output’ of one function will be the ‘input’ of the next one Somet...
很多同学或家长都认为：A-Level成绩只能申请英国大学。但实际上还有很多英联邦国家的大学，都是认可A-Level成绩的，比如澳大利亚的大学，直接接受A-Level成绩入读本科。 同时，澳洲有八所高校在世界各大权威排行...
Proportional Relationships Proportional relationships Proportional relationships describe a proportional connection between two variables This can happen in two ways Direct proportion one variable ...
Solving Equations Graphically Solving (simultaneous) equations graphically This is a way to solve simultaneous equations (see Simultaneous Equations) Coordinates of the intersections are the...
Reciprocal Graphs - Sketching What are reciprocal graphs? Reciprocal graphs involve equations with an term on the denominator e.g. There are two basic reciprocal graphs to know for A level The seco...
Sketching Polynomials Sketching the graph of a polynomial Remember a polynomial is any finite function with non-negative indices, that could mean a quadratic, cubic, quartic or higher power ...
Improper Algebraic Fractions What are top-heavy (improper) rational expressions (or algrbraic fractions)? The degree of the numerator is greater than or equal to the degree of the denominator How d...
Rational Expressions (Algebraic Fractions) What are rational expressions? Rational numbers are numbers that can be written as a fraction (quotient)Rational comes from ratio – a number is rational i...
