一張照片是題目，一張照片是我的過程，懇請各位數學先進幫幫忙了
[moptt_image_upload:file:///storage/emulated/0/Pictures/MoPTT/capture_1509265298393.jpg result:https://i.imgur.com/oD0x4mz.jpg]
[moptt_image_upload:file:///storage/emulated/0/Pictures/MoPTT/capture_1509265311756.jpg result:https://i.imgur.com/nro5A5C.jpg]