<p>Worksheet with range of intersecting chords questions ; it starts with simple cases but develops into quadratics, surds and simultaneous equations.</p>

<p>Differentiation - all year 13 skills - chain, product, quotient rule, implicit differentiation. All mixed so students have to choose the appropriate method.</p>

<p>Find the equation given the graph; harder GCSE or A Level questions. Written for new IGCSE</p>