iPhoneXS MAX/11Pro iPhoneX/XS/11ProMax iPhoneXR/11 iPhone8/7/6s/6 Plus iPhone8/7/6s/6 iPhone5s/5c/5 iPhone4s/4
2560x2880 1440x2560 1920x2160 1080x1980 1080x1920 1280x1440 640x960
2560x1440 1920x1080 1536x864 1440x900 1366x768 1280x800 1280x1024
URL：http://proofcafe.org/k27c8/math/math/analysisI/pic/graph5.gif 掲載元：http://proofcafe.org/k27c8/math/math/analysisI/page/local_maximum_and_local_minimum/
