Edexcel IGCSE Biology: Double Science 复习笔记 2.5.7 Humans: Balanced Diet The Importance of a Balanced Diet A balanced diet consists of all of the food groups in the correct proportions The...
Edexcel IGCSE Biology: Double Science 复习笔记 2.5.6 Practical: Investigating Chlorophyll & Photosynthesis Practical: Investigating Chlorophyll and Photosynthesis Starch is stored in chl...
Edexcel IGCSE Biology: Double Science 复习笔记 2.5.5 Practical: Investigating Carbon Dioxide & Photosynthesis Practical: Investigating Carbon Dioxide & Photosynthesis The iodine test...
Edexcel IGCSE Biology: Double Science 复习笔记 2.5.4 Practical: Investigating Light & Photosynthesis Practical: Investigating Light & Photosynthesis Although plants synthesise glucos...
Edexcel IGCSE Biology: Double Science 复习笔记 2.5.3 Practical: Investigating Photosynthesis & the Evolution of Oxygen Practical: Evolution of Oxygen We can demonstrate the evolution of ...
Inverse of a Matrix What is an inverse of a matrix? The determinant can be used to find out if a matrix is invertible or not: If , then is invertible If , then is singular and does not have an in...
Determinant of a 2x2 Matrix What is a determinant? The determinant is a numerical value (positive or negative) calculated from the elements in a matrix and is used to find the inverse of a matrix Y...
Introduction to Matrices Matrices are a useful way to represent and manipulate data in order to model situations. The elements in a matrix can represent data, equations or systems and have many rea...
Roots of Complex Numbers How do I find the square root of a complex number? The square roots of a complex number will themselves be complex: i.e. if We can then square and equate it to the original...
