These **'Just For Your Interest...'** posters explore the maths behind various common questions, often ones that I've pondered myself when I was a student. The A Level posters can all be found within the respective A Level PowerPoints, but the pdfs are included here for your printing convenience. Enjoy!

# JFYI - Why might we write straight line equations in the form ax + by + c = 0?

## 1 files29/08/2017

The 'Just For Your Interest' series of posters explores answers to questions I've pondered in my student days and beyond.

# JFYI - Why does "cosine" contain the word "sine"?

## 1 files29/08/2017

The 'Just For Your Interest' series of posters explores answers to questions I've pondered in my student days and beyond.

# JFYI - Why can't we immediately make h zero in differentiation by first principles?

## 1 files29/08/2017

The 'Just For Your Interest' series of posters explores answers to questions I've pondered in my student days and beyond.

# JFYI - Why do we say 'equal roots' not 'one root'?

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# JFYI - What is e and why is it so important?

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# JFYI - Why does integration give you the area under a graph?

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# JFYI - What happens when you multiply two vectors or two sets?

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# Why do we put the squareds where they are in the second derivative, d

^{2}y/dx^{2}?## 1 files29/08/2017

# JFYI - Is tan in trig related to the tangent of a circle?

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# JFYI - What is the difference between the notation f(x) = 2x + 1 and f : x -> 2x+1?

## 1 files15/10/2017