1又3/10+3又3/40+5又3/88+7又3/154+9又3/238+11又3/340 拆分求值,麻烦说的详细点.
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![1又3/10+3又3/40+5又3/88+7又3/154+9又3/238+11又3/340 拆分求值,麻烦说的详细点.](/uploads/image/z/2532554-26-4.jpg?t=1%E5%8F%883%2F10%2B3%E5%8F%883%2F40%2B5%E5%8F%883%2F88%2B7%E5%8F%883%2F154%2B9%E5%8F%883%2F238%2B11%E5%8F%883%2F340+%E6%8B%86%E5%88%86%E6%B1%82%E5%80%BC%2C%E9%BA%BB%E7%83%A6%E8%AF%B4%E7%9A%84%E8%AF%A6%E7%BB%86%E7%82%B9.)
1又3/10+3又3/40+5又3/88+7又3/154+9又3/238+11又3/340 拆分求值,麻烦说的详细点.
1又3/10+3又3/40+5又3/88+7又3/154+9又3/238+11又3/340 拆分求值,麻烦说的详细点.
1又3/10+3又3/40+5又3/88+7又3/154+9又3/238+11又3/340 拆分求值,麻烦说的详细点.
1又3/10+3又3/40+5又3/88+7又3/154+9又3/238+11又3/340
=(1+3+5+7+9+11)+(3/10+3/40+3/88+3/154+3/238+3/340 )
=6×6+3×(1/10+1/40+1/88+1/154+1/238+1/340)
=36+(1/2-1/5+1/5-1/8+1/8-1/11+1/11-1/14+1/14-1/17+1/17-1/20)
=36+1/2-1/20
=36.45
1又3/10+3又3/40+5又3/88+7又3/154+9又3/238+11又3/340
=(1+3+5+7+9+11)+(3/10+3/40+3/88+....+3/340)
=(1+11)*6/2+(1/2-1/5+1/5-1/8+1/8-1/11+...+1/17-1/20)
=36+(1/2-1/20)
=36+9/20
=36又9/20(1/2...
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1又3/10+3又3/40+5又3/88+7又3/154+9又3/238+11又3/340
=(1+3+5+7+9+11)+(3/10+3/40+3/88+....+3/340)
=(1+11)*6/2+(1/2-1/5+1/5-1/8+1/8-1/11+...+1/17-1/20)
=36+(1/2-1/20)
=36+9/20
=36又9/20
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