diff --git a/.DS_Store b/.DS_Store new file mode 100644 index 0000000000000000000000000000000000000000..bea16693e16c63f6dfbd8439ce97e266833d4061 Binary files /dev/null and b/.DS_Store differ diff --git a/cours/sbd_chapitre_4.pdf b/cours/sbd_chapitre_4.pdf new file mode 100644 index 0000000000000000000000000000000000000000..22b2c786c25c00fcfc8b522408b6f936155c7170 Binary files /dev/null and b/cours/sbd_chapitre_4.pdf differ diff --git a/exercices/.DS_Store b/exercices/.DS_Store new file mode 100644 index 0000000000000000000000000000000000000000..bb2b4ea3d6760309c8f4fb63f5c4ddfd576b8af5 Binary files /dev/null and b/exercices/.DS_Store differ diff --git a/exercices/correction/.DS_Store b/exercices/correction/.DS_Store new file mode 100644 index 0000000000000000000000000000000000000000..b2fb96f6db5412b885417f0165b440fabbe4992e Binary files /dev/null and b/exercices/correction/.DS_Store differ diff --git a/exercices/serie4.pdf b/exercices/serie4.pdf new file mode 100644 index 0000000000000000000000000000000000000000..29c6b97ebc372173c38838692fd67cc96d75523a Binary files /dev/null and b/exercices/serie4.pdf differ