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qwea 寫到:

G@ry 寫到:3√(1728/1000) = 1.2 = 1+20%  =>  提高率是20%#ed_op#br#ed_cl#

#ed_op#div#ed_cl#謝謝您的答覆!!!#ed_op#/div#ed_cl##ed_op#div#ed_cl#假如不要用開√的方式, 請問要如何解比較好???#ed_op#/div#ed_cl##ed_op#div#ed_cl# #ed_op#/div#ed_cl##ed_op#div#ed_cl#P.S::因為是小學生問的問題..#ed_op#/div#ed_cl#

#ed_op#br#ed_cl##ed_op#br#ed_cl#可以用數列的方式：#ed_op#br#ed_cl#1000, A , B ,1728#ed_op#br#ed_cl#找答案的方法：先因式分解，分組#ed_op#br#ed_cl#1000=10#ed_op#sup#ed_cl#3#ed_op#/sup#ed_cl##ed_op#br#ed_cl#1728=3#ed_op#sup#ed_cl#3#ed_op#/sup#ed_cl#×2#ed_op#sup#ed_cl#6#ed_op#/sup#ed_cl#=(3×2#ed_op#sup#ed_cl#2#ed_op#/sup#ed_cl#)#ed_op#sup#ed_cl#3#ed_op#/sup#ed_cl#=12#ed_op#sup#ed_cl#3#ed_op#/sup#ed_cl##ed_op#sup#ed_cl##ed_op#/sup#ed_cl##ed_op#br#ed_cl#所以A=1000×12/10=1000×1.2#ed_op#br#ed_cl#B=1000×(12/10)#ed_op#sup#ed_cl#2#ed_op#/sup#ed_cl#=1000×1.2#ed_op#sup#ed_cl#2#ed_op#/sup#ed_cl##ed_op#br#ed_cl#1728=1000×(12/10)#ed_op#sup#ed_cl#2#ed_op#/sup#ed_cl#=1000×1.2#ed_op#sup#ed_cl#3#ed_op#/sup#ed_cl##ed_op#br#ed_cl#1.2 = 1+20%  =>  提高率是20%#ed_op#br#ed_cl##ed_op#br#ed_cl##ed_op#br#ed_cl##ed_op#br#ed_cl##ed_op#br#ed_cl#

qwea 寫到:

G@ry 寫到:3√(1728/1000) = 1.2 = 1+20%  =>  提高率是20%#ed_op#br#ed_cl#

#ed_op#div#ed_cl#謝謝您的答覆!!!#ed_op#/div#ed_cl##ed_op#div#ed_cl#假如不要用開√的方式, 請問要如何解比較好???#ed_op#/div#ed_cl##ed_op#div#ed_cl# #ed_op#/div#ed_cl##ed_op#div#ed_cl#P.S::因為是小學生問的問題..#ed_op#/div#ed_cl#

#ed_op#br#ed_cl#不好意思...不是√，是#ed_op#sup#ed_cl#3#ed_op#/sup#ed_cl#√...已改了~~~#ed_op#br#ed_cl##ed_op#br#ed_cl#小學................................#ed_op#br#ed_cl#小學生好像連代數也未學吧，對嗎？.......那只能用"碰運氣"(+夾擊定理)的方法.......#ed_op#br#ed_cl#0.728/3=0.242... 提高率<24.2%; 1.24*1.24*1.24=1.906624  => 太大了#ed_op#br#ed_cl#接着就試較低的單位小數 => 20% => 1.2*1.2*1.2=1.728 => 對了....#ed_op#br#ed_cl#若果不對的話就看看差了多少，再用猜出來的數再試吧....#ed_op#br#ed_cl#

G@ry 寫到:3√(1728/1000) = 1.2 = 1+20%  =>  提高率是20%#ed_op#BR#ed_cl#

#ed_op#DIV#ed_cl#謝謝您的答覆!!!#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#假如不要用開√的方式, 請問要如何解比較好???#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl# #ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#P.S::因為是小學生問的問題..#ed_op#/DIV#ed_cl#

qwea 寫到:#ed_op#div#ed_cl##ed_op#font size="2"#ed_cl#工廠每週生產１０００個Ｈｅｌｌｏ　Ｋｉｔｔｙ玩具，此工廠計畫下週開始要提高生產量，若此工廠三週後的生產量變成１７２８個，假設每週產量提高率都相同，則每週產量提高率是（　　）％ #ed_op#/font#ed_cl##ed_op#/div#ed_cl##ed_op#div#ed_cl##ed_op#/div#ed_cl##ed_op#div#ed_cl##ed_op#/div#ed_cl#

#ed_op#br#ed_cl##ed_op#sup#ed_cl#3#ed_op#/sup#ed_cl#√(1728/1000) = 1.2 = 1+20%  =>  提高率是20%#ed_op#br#ed_cl#

#ed_op#DIV#ed_cl##ed_op#FONT size=2#ed_cl#工廠每週生產１０００個Ｈｅｌｌｏ　Ｋｉｔｔｙ玩具，此工廠計畫下週開始要提高生產量，若此工廠三週後的生產量變成１７２８個，假設每週產量提高率都相同，則每週產量提高率是（　　）％ #ed_op#/FONT#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#/DIV#ed_cl#