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Let's draw a line. It crosses the point (0,1), intercepting the y-axis (remember, y to the sky!) at 1 and the x-axis at the point (-2,0).

An equation tells us what a line looks like, it's...

let y=sec(x) = 1/(cos(X)) = cos(x)^-1

Thus dy/dx = -1(cos(x))^-2(-sinx) = sin(x)/(cos(x))²

= 1/cos(x)  x  sin(x)/cos(x)

=sec(x)t...

To understand how HIV causes infection, students should have an appreciation for its basic virus structure and how it infects humans. Following infection, how does it cause disease and eventually AIDS? Wh...

Here is a sample question from the writing task of the BMAT exam. 4. Parents who withhold vaccines from their children have betrayed their duty of care.How would you go about answering th...

Oxbridge applications. We've all heard the rumours flying around about how your interviewers ask you to balance on your head whilst solving a simultaneous equation and reading a book. This is simply NOT t...