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Diffstat (limited to 'usth/MATH2.2/hw')
| -rw-r--r-- | usth/MATH2.2/hw/README.md | 22 | ||||
| -rwxr-xr-x | usth/MATH2.2/hw/cubic | 25 | ||||
| -rw-r--r-- | usth/MATH2.2/hw/fibonacci.m | 7 | ||||
| -rw-r--r-- | usth/MATH2.2/hw/homework.pdf | bin | 122465 -> 0 bytes | |||
| -rwxr-xr-x | usth/MATH2.2/hw/linear | 11 | ||||
| -rwxr-xr-x | usth/MATH2.2/hw/quadratic | 14 |
6 files changed, 0 insertions, 79 deletions
diff --git a/usth/MATH2.2/hw/README.md b/usth/MATH2.2/hw/README.md deleted file mode 100644 index fbb5730..0000000 --- a/usth/MATH2.2/hw/README.md +++ /dev/null @@ -1,22 +0,0 @@ -# Numerical Methods: Homework 1 - -My name is Nguyễn Gia Phong, my student ID is BI9-184. - -The homework were written in Octave and saved as - -* `linear`: interactive script to solve linear equation -* `quadratic`: interactive script to solve quadratic equation -* `cubic`: interactive script to solve cubic equation -* `fibonacci.m`: function `fibonacci (n)` returning a vector containing - Fibonacci numbers from F<sub>1</sub> to F<sub>n</sub> - -The scripts are named without any file extension following the \*nix traditions. -The homework can be downloaded as a whole in a ZIP package using the button -near the top-left corner, or alternatively cloned using `git`: - - git clone https://gist.github.com/McSinyx/1d9ff91d1ecfd60254c188bddb7926d5 - -If this causes any inconvenience, please let me know. - -[](http://creativecommons.org/licenses/by-sa/4.0/) -This work is licensed under a [Creative Commons Attribution-ShareAlike 4.0 International License](http://creativecommons.org/licenses/by-sa/4.0/). diff --git a/usth/MATH2.2/hw/cubic b/usth/MATH2.2/hw/cubic deleted file mode 100755 index ca24739..0000000 --- a/usth/MATH2.2/hw/cubic +++ /dev/null @@ -1,25 +0,0 @@ -#!/usr/bin/env octave -disp ("Solve quadratic equation a*x^3 + b*x^2 + c*x + d = 0"); -a = input ("a = "); -while (a == 0) - disp ("a must be nonzero"); - a = input ("a = "); -end -b = input ("b = "); -c = input ("c = "); -d = input ("d = "); - -% Using the trigonometric and hyperbolic solutions on Wikipedia: -% https://en.wikipedia.org/wiki/Cubic_function -p = (3*a*c - b^2) / (3*a^2); -q = (2*b^3 - 9*a*b*c + 27*a^2*d) / (27*a^3); -if (p == 0) - disp ("The given cubic equation has only one distinct solution:"); - x = cbrt(-q) - b/a/3 -else - r = 2 * sqrt(-p/3); - disp ("The three solutions of the given quadratic equation are:"); - for k = 0 : 2 - x = r * cos((acos(3*q/p/r) - 2*pi*k) / 3) - b/a/3 - end -end diff --git a/usth/MATH2.2/hw/fibonacci.m b/usth/MATH2.2/hw/fibonacci.m deleted file mode 100644 index 340c108..0000000 --- a/usth/MATH2.2/hw/fibonacci.m +++ /dev/null @@ -1,7 +0,0 @@ -function fib = fibonacci (n) - fib = 0 : n; - for i = 2 : n - fib(i + 1) = fib(i) + fib(i - 1); - end - fib = fib(2:end); -end diff --git a/usth/MATH2.2/hw/homework.pdf b/usth/MATH2.2/hw/homework.pdf deleted file mode 100644 index 9d3f2e9..0000000 --- a/usth/MATH2.2/hw/homework.pdf +++ /dev/null Binary files differdiff --git a/usth/MATH2.2/hw/linear b/usth/MATH2.2/hw/linear deleted file mode 100755 index fad7e67..0000000 --- a/usth/MATH2.2/hw/linear +++ /dev/null @@ -1,11 +0,0 @@ -#!/usr/bin/env octave -disp ("Solve quadratic equation ax + b = 0"); -a = input ("a = "); -while (a == 0) - disp ("a must be nonzero"); - a = input ("a = "); -end -b = input ("b = "); - -disp ("The two solutions of the given linear equation is:"); -x = -b / a diff --git a/usth/MATH2.2/hw/quadratic b/usth/MATH2.2/hw/quadratic deleted file mode 100755 index b6ea91a..0000000 --- a/usth/MATH2.2/hw/quadratic +++ /dev/null @@ -1,14 +0,0 @@ -#!/usr/bin/env octave -disp ("Solve quadratic equation a*x^2 + b*x + c = 0"); -a = input ("a = "); -while (a == 0) - disp ("a must be nonzero"); - a = input ("a = "); -end -b = input ("b = "); -c = input ("c = "); - -sd = sqrt(b*b - a*c*4); -disp ("The two solutions of the given quadratic equation are:"); -x0 = (-b - sd) / a / 2 -x1 = (-b + sd) / a / 2 |