Задание 2 - пункт 1

task2/01_maclaurin/.gitignore

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+.stack-work/
+*~

task2/01_maclaurin/app/Main.hs

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+module Main where
+
+import Graphics.EasyPlot
+
+-- Шаг сетки
+delta = 0.001
+
+-- Функция
+u = sin
+
+-- Точка
+t = 0.5
+
+-- Абсолютная погрешность
+err = 10 ** (-3)
+
+main :: IO ()
+main = do
+    let res = map (\(x,y) -> (fromIntegral x,y)) $ calc u t
+    plot X11 $ Data2D [Style Lines] [] res 
+    print res
+
+
+calc u t = calc' 0 [] u t where
+        calc' n stat u t | err' < err = (n, err') : stat
+                         | otherwise = (n, err') : calc' (n + 1) stat u t
+            where err' = abs (u t - maclaurin u t n) 
+
+factorial n | n < 2 = 1
+            | otherwise = n * factorial (n - 1)
+
+diff u 0 h x = u x
+diff u n h x = (u' (x + h) - u' (x - h)) / (2 * h) where
+    u' = diff u (n - 1) h
+
+maclaurin u x 0 = u 0
+maclaurin u x n = (x ** (fromIntegral n)) * (diff u n delta 0) / (fromIntegral $ factorial n) + maclaurin u x (n - 1)   

task2/01_maclaurin/package.yaml

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+name:                01maclaurin
+
+dependencies:
+- base >= 4.7 && < 5
+- easyplot
+
+ghc-options:
+- -Wall
+- -Wcompat
+- -Widentities
+- -Wincomplete-record-updates
+- -Wincomplete-uni-patterns
+- -Wmissing-export-lists
+- -Wmissing-home-modules
+- -Wpartial-fields
+- -Wredundant-constraints
+
+executables:
+  01maclaurin-exe:
+    main:                Main.hs
+    source-dirs:         app
+    ghc-options:
+    - -threaded
+    - -rtsopts
+    - -with-rtsopts=-N

task2/01_maclaurin/stack.yaml

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+# This file was automatically generated by 'stack init'
+#
+# Some commonly used options have been documented as comments in this file.
+# For advanced use and comprehensive documentation of the format, please see:
+# https://docs.haskellstack.org/en/stable/yaml_configuration/
+
+# Resolver to choose a 'specific' stackage snapshot or a compiler version.
+# A snapshot resolver dictates the compiler version and the set of packages
+# to be used for project dependencies. For example:
+#
+# resolver: lts-3.5
+# resolver: nightly-2015-09-21
+# resolver: ghc-7.10.2
+#
+# The location of a snapshot can be provided as a file or url. Stack assumes
+# a snapshot provided as a file might change, whereas a url resource does not.
+#
+# resolver: ./custom-snapshot.yaml
+# resolver: https://example.com/snapshots/2018-01-01.yaml
+resolver:
+  url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/21/12.yaml
+
+# User packages to be built.
+# Various formats can be used as shown in the example below.
+#
+# packages:
+# - some-directory
+# - https://example.com/foo/bar/baz-0.0.2.tar.gz
+#   subdirs:
+#   - auto-update
+#   - wai
+packages:
+- .
+# Dependency packages to be pulled from upstream that are not in the resolver.
+# These entries can reference officially published versions as well as
+# forks / in-progress versions pinned to a git hash. For example:
+#
+extra-deps:
+- easyplot-1.0@sha256:3fec6ccf425b370ab668eb342bc4cd92777880653e27a982db7b225fd007cb2b,1936
+# - acme-missiles-0.3
+# - git: https://github.com/commercialhaskell/stack.git
+#   commit: e7b331f14bcffb8367cd58fbfc8b40ec7642100a
+#
+# extra-deps: []
+
+# Override default flag values for local packages and extra-deps
+# flags: {}
+
+# Extra package databases containing global packages
+# extra-package-dbs: []
+
+# Control whether we use the GHC we find on the path
+# system-ghc: true
+#
+# Require a specific version of stack, using version ranges
+# require-stack-version: -any # Default
+# require-stack-version: ">=2.7"
+#
+# Override the architecture used by stack, especially useful on Windows
+# arch: i386
+# arch: x86_64
+#
+# Extra directories used by stack for building
+# extra-include-dirs: [/path/to/dir]
+# extra-lib-dirs: [/path/to/dir]
+#
+# Allow a newer minor version of GHC than the snapshot specifies
+# compiler-check: newer-minor

task2/01_maclaurin/stack.yaml.lock

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+# This file was autogenerated by Stack.
+# You should not edit this file by hand.
+# For more information, please see the documentation at:
+#   https://docs.haskellstack.org/en/stable/lock_files
+
+packages:
+- completed:
+    hackage: easyplot-1.0@sha256:3fec6ccf425b370ab668eb342bc4cd92777880653e27a982db7b225fd007cb2b,1936
+    pantry-tree:
+      sha256: a5de94b54a51732bf70a601fca8c905fe074ecf870ea573db36d53a3bbb282f4
+      size: 219
+  original:
+    hackage: easyplot-1.0@sha256:3fec6ccf425b370ab668eb342bc4cd92777880653e27a982db7b225fd007cb2b,1936
+snapshots:
+- completed:
+    sha256: 9313df78f49519315342f4c51ffc5da12659d3735f8ac3c54a1fb98ff874474e
+    size: 640036
+    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/21/12.yaml
+  original:
+    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/21/12.yaml