解
展開する ex(1+x)17
解
ex+17exx+136exx2+680exx3+2380exx4+6188exx5+12376exx6+19448exx7+24310exx8+24310exx9+19448exx10+12376exx11+6188exx12+2380exx13+680exx14+136exx15+17exx16+exx17
解答ステップ
ex(1+x)17
(1+x)17=1+17x+136x2+680x3+2380x4+6188x5+12376x6+19448x7+24310x8+24310x9+19448x10+12376x11+6188x12+2380x13+680x14+136x15+17x16+x17
=ex(x17+17x16+136x15+680x14+2380x13+6188x12+12376x11+19448x10+24310x9+24310x8+19448x7+12376x6+6188x5+2380x4+680x3+136x2+17x+1)
括弧を分配する=ex⋅1+ex⋅17x+ex⋅136x2+ex⋅680x3+ex⋅2380x4+ex⋅6188x5+ex⋅12376x6+ex⋅19448x7+ex⋅24310x8+ex⋅24310x9+ex⋅19448x10+ex⋅12376x11+ex⋅6188x12+ex⋅2380x13+ex⋅680x14+ex⋅136x15+ex⋅17x16+exx17
=1⋅ex+17exx+136exx2+680exx3+2380exx4+6188exx5+12376exx6+19448exx7+24310exx8+24310exx9+19448exx10+12376exx11+6188exx12+2380exx13+680exx14+136exx15+17exx16+exx17
乗算:1⋅ex=ex=ex+17exx+136exx2+680exx3+2380exx4+6188exx5+12376exx6+19448exx7+24310exx8+24310exx9+19448exx10+12376exx11+6188exx12+2380exx13+680exx14+136exx15+17exx16+exx17