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NRICH topics: Calculus Infinite series

Resources tagged with: Infinite series

Content type:
Age range:
Challenge level:

There are 4 NRICH Mathematical resources connected to Infinite series, you may find related items under Calculus.

Broad Topics > Calculus > Infinite series

Problem Primary curriculum Secondary curriculum

Diminishing Returns

How much of the square is coloured blue? How will the pattern continue?

Age 11 to 14
Challenge Level Yellow star
Problem Primary curriculum Secondary curriculum

Harmonically

Is it true that a large integer m can be taken such that: 1 + 1/2 + 1/3 + ... +1/m > 100 ?

Age 16 to 18
Challenge Level Yellow starYellow starYellow star
Problem Primary curriculum Secondary curriculum

Circles Ad Infinitum

A circle is inscribed in an equilateral triangle. Smaller circles touch it and the sides of the triangle, the process continuing indefinitely. What is the sum of the areas of all the circles?

Age 16 to 18
Challenge Level Yellow starYellow star
Problem Primary curriculum Secondary curriculum

Generally Geometric

Generalise the sum of a GP by using derivatives to make the coefficients into powers of the natural numbers.

Age 16 to 18
Challenge Level Yellow starYellow star

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The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice.

NRICH is part of the family of activities in the Millennium Mathematics Project.

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