This video introduces permanent magnets, their fields and how to investigate them using iron filings. It also demonstrates the field between attracting and repelling magnets. 

Act 1

A five-way split video is shown of a student drinking...

Sarah is a finance manager for the Arcadia Group, she discusses her role in this video. Sarah is responsible for cash flow forecasts and finance reporting. Sarah always liked maths at school and completed a degree in economics at the University of Bath during which she participated in a...

Ian is an independent financial advisor for Valiant, he discusses his role in this video. Ian spent time in both France and Germany as a teenager and had a variety of jobs having completed a degree before becoming an independent financial advisor. Ian explains that a key part of being successful is having good...

The mathematical solution explains how to find the value of the first and second derivatives of a given function at specific values for x. The function is presented in the form of algebraic fractions which needs to be converted to index notation and the chain rule used to find the differentials.

The mathematical solution explains how to solve the equation: sin(x+150) = 1/sqrt2 for x between 0⁰ and 360⁰. To begin with, the principle values for (x+150) are found. The fact that a sine curve is periodic is used to find the solution set for (x+150) based upon these two initial values. Subtracting 150 from each...

The mathematical solution explains how to find the minimum value and sketch the curve of y = 4x² + 12x + 10. The first method uses calculus, differentiating the function and equating the differential to zero. The resulting equation is solved to find the x value of the minimum point. This value is then...