3/10+3/40+3/88+3/154+3/238+3/340
=(3/2x5)+(3/5x8)+(3/8x11)+(3/11x14)+(3/14x17)+(3/17x20)
=(1/2-1/5)+(1/5-1/8)+(1/8-1/11)+(1/11-1/14)+(1/14-1/17)+(1/17-1/20)
= 1/2 - 1/20
= 0.5 - 0.05
= 0.45
3/10+3/40+3/88+3/154+3/238+3/340
=(3/2x5)+(3/5x8)+(3/8x11)+(3/11x14)+(3/14x17)+(3/17x20)
=(1/2-1/5)+(1/5-1/8)+(1/8-1/11)+(1/11-1/14)+(1/14-1/17)+(1/17-1/20)
= 1/2 - 1/20
= 0.5 - 0.05
= 0.45
• 這個方法好 -周老大- ♂ (0 bytes) () 07/15/2024 postreply 20:24:02
• 咱問了CHARGPT,它也做不出,咱就釋懷了。OPENAI 總不會搞出個老年持呆吧 -種西瓜- ♂ (0 bytes) () 07/15/2024 postreply 21:05:08
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