# Category Archives: Maxima

# Maxima on Android

Such a long long time since I last posted! Very poor blogging etiquette. Anyway, to break the drought, here’s news of the best thing to come my way in the last six months – fully featured Maxima running on Android

# Maxima on Android

Such a long long time since I last posted! Very poor blogging etiquette. Anyway, to break the drought, here’s news of the best thing to come my way in the last six months – fully featured Maxima running on Android

# A piecewise polynomial approximation to the normal CDF

The normal cumulative distribution function has the unfortunate property of not being expressible in terms of elementary functions; that is, it can’t be computed with functions available on a standard scientific calculator. Some modern calculators, such as the Casio ClassPad

# A piecewise polynomial approximation to the normal CDF

The normal cumulative distribution function has the unfortunate property of not being expressible in terms of elementary functions; that is, it can’t be computed with functions available on a standard scientific calculator. Some modern calculators, such as the Casio ClassPad

# Easy Lagrangian interpolation

As everybody knows, the formula for Lagrangian interpolation though points , where all the values are distinct, is given by It is easy to see that this works, as the product is equal to zero if and is equal to

# Easy Lagrangian interpolation

As everybody knows, the formula for Lagrangian interpolation though points , where all the values are distinct, is given by It is easy to see that this works, as the product is equal to zero if and is equal to

# Symbolic integration with an open source CAS

When I use Maple with my first year students, and we are experimenting with integration, I challenge them to produce a function which Maple can’t integrate in closed form. Given the huge number of special functions in Maple, and my

# Symbolic integration with an open source CAS

When I use Maple with my first year students, and we are experimenting with integration, I challenge them to produce a function which Maple can’t integrate in closed form. Given the huge number of special functions in Maple, and my

# The Digital Signature Algorithm in Maxima and Sage

The Digital Signature Algorithm, also known as the Digital Signature Standard is, as it name implies, a standard for digital signatures. Most digital signature algorithms work by reversing a public key cryptosystem: a message is signed with the sender’s private

# The Digital Signature Algorithm in Maxima and Sage

The Digital Signature Algorithm, also known as the Digital Signature Standard is, as it name implies, a standard for digital signatures. Most digital signature algorithms work by reversing a public key cryptosystem: a message is signed with the sender’s private

# Fun with numerical integration

Numerical integration, or quadrature (to use the old-fashioned, but charming, term) is the business of finding approximate values to definite integrals; integrals which are either impossible to be computed analytically, or for which the antiderivative is too complex to be

# Fun with numerical integration

Numerical integration, or quadrature (to use the old-fashioned, but charming, term) is the business of finding approximate values to definite integrals; integrals which are either impossible to be computed analytically, or for which the antiderivative is too complex to be

# Calculating pi

Here’s a lovely iteration which converges quadratically to . Start with: . Then: for for for This remarkable iteration comes from Borwein and Borwein’s “Pi and the AGM“; this is the first formula for of the many in the book.

# Calculating pi

Here’s a lovely iteration which converges quadratically to . Start with: . Then: for for for This remarkable iteration comes from Borwein and Borwein’s “Pi and the AGM“; this is the first formula for of the many in the book.