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Eric Blake


Black River Systems

Last seen: 4 months ago |  Active since 2012

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Fast and Accurate Symmetric Positive Definite Matrix Inverse Using Cholesky Decomposition
use LAPACK Cholesky to invert real positive definite symmetric matrix; faster more accurate than inv

9 years ago | 3 downloads |

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Solved


radius of a spherical planet
you just measured its surface area, that is the input.

12 years ago

Solved


inner product of two vectors
inner product of two vectors

12 years ago

Solved


Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

12 years ago

Solved


Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

12 years ago

Solved


The Hitchhiker's Guide to MATLAB
Output logical "true" if the input is the answer to life, the universe and everything. Otherwise, output logical "false".

12 years ago

Solved


Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

12 years ago

Solved


Check if sorted
Check if sorted. Example: Input x = [1 2 0] Output y is 0

12 years ago

Solved


Is my wife right?
Regardless of input, output the string 'yes'.

12 years ago

Solved


Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

12 years ago

Solved


Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

12 years ago