## Video: Rapid calculus - Rolle's Theorem

Video tutorial on how to use Rolle's theorem to find a point c in the interval where the function has a horizontal tangent line, in other words, where it has a critical point at which the function has a local maximum or minimum and where it changes direction from increasing to decreasing or vice versa.

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## Popular resources by this author

Integration by Parts calculus example.

#### Ratio of Integers and Repeating Decimals

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#### Video: Predator-prey systems

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## New resources

#### Complex numbers

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#### Nth Roots of a Complex Number

Use de Moivre’s theorem to find nth roots of a complex number. Graph nth roots of a complex number on the Argand diagram. Generalize the position o...

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#### Edexcel Further Pure 1 Last Minute Revision

A powerpoint covering all the topics in Edexcel Further Pure 1 exam. Built in timers and exam questions - works well as a last lesson before the exam.

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#### complex numbers solved problems

complex numbers solved problems for high schools students contain some good ideas

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## Updated resources

#### Solving system of equations

Power Point presentation, 10 slides, Explaining how to solve system of equations with two or three unknowns, using the methods of substitutions, el...

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#### Conjugate root theorem, sum and product of polynomial roots

Power Point presentation, 12 slides, demonstrating that for a given polynomial that has a complex zero z, then its conjugate z* is also a zero of t...

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#### Complex numbers - PowerPoint

Complex numbers - introduction, imaginary number i, addition, subtraction, multiplication and division of complex numbers.

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#### Past paper questions on Complex Numbers

Past paper questions on complex numbers with marking scheme of Cambridge A level Pure Maths 3 (9709)

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