Limits

There are 20 NRICH Mathematical resources connected to Limits
Golden Eggs
problem

Golden eggs

Age
16 to 18
Challenge level
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Find a connection between the shape of a special ellipse and an infinite string of nested square roots.
Golden Fractions
problem

Golden fractions

Age
16 to 18
Challenge level
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Find the link between a sequence of continued fractions and the ratio of succesive Fibonacci numbers.
Squareflake
problem

Squareflake

Age
16 to 18
Challenge level
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A finite area inside and infinite skin! You can paint the interior of this fractal with a small tin of paint but you could never get enough paint to paint the edge.
Placeholder: several colourful numbers
problem

Resistance

Age
16 to 18
Challenge level
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Find the equation from which to calculate the resistance of an infinite network of resistances.
Production Equation
problem

Production equation

Age
16 to 18
Challenge level
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Each week a company produces X units and sells p per cent of its stock. How should the company plan its warehouse space?
Over The Pole
problem

Over the pole

Age
16 to 18
Challenge level
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Two places are diametrically opposite each other on the same line of latitude. Compare the distances between them travelling along the line of latitude and travelling over the nearest pole.
Fractional Calculus I
article

Fractional calculus i

You can differentiate and integrate n times but what if n is not a whole number? This generalisation of calculus was introduced and discussed on askNRICH by some school students.
Fractional Calculus II
article

Fractional calculus ii

Here explore some ideas of how the definitions and methods of calculus change if you integrate or differentiate n times when n is not a whole number.
Fractional Calculus III
article

Fractional calculus iii

Fractional calculus is a generalisation of ordinary calculus where you can differentiate n times when n is not a whole number.