用㏒ax.㏒ay.㏒az.㏒a(x y).㏒a(x-y)表示下列格式
(1)㏒a(xy^1/2z^-2/3)(2)㏒axy/x²-y²(3)㏒a(x+y分之x-y·y)(3)㏒a[y/x(x-y)]^-3...
(1)㏒a(xy^1/2 z^-2/3)
(2)㏒a xy/x²-y²
(3)㏒a(x+y分之x-y ·y)
(3)㏒a[y/x(x-y)]^-3 展开
(2)㏒a xy/x²-y²
(3)㏒a(x+y分之x-y ·y)
(3)㏒a[y/x(x-y)]^-3 展开
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(1)㏒a(xy^1/2 z^-2/3)
=㏒ax+㏒ay^1/2+㏒a z^-2/3
=㏒ax+(1/2)㏒ay-(2/3)㏒a z
(2)㏒a xy/x²-y²=㏒a xy-㏒a(x²-y²)
=㏒ax+㏒ay - ㏒a((x-y)(x+y))
=㏒ax+㏒ay-㏒a(x+y)-㏒a(x-y)
(3)㏒a(x+y分之x-y ·y)=㏒a(x+y分之x-y)+㏒ay
=㏒a(x-y)-㏒a(x+y)+㏒ay
(4)㏒a[y/x(x-y)]^-3=-3㏒a[y/x(x-y)]
=-3[㏒ay-㏒a[x(x-y)]]
=-3[㏒ay-㏒ax-㏒a(x-y)]
=-3㏒ay+3㏒ax+3㏒a(x-y)
=㏒ax+㏒ay^1/2+㏒a z^-2/3
=㏒ax+(1/2)㏒ay-(2/3)㏒a z
(2)㏒a xy/x²-y²=㏒a xy-㏒a(x²-y²)
=㏒ax+㏒ay - ㏒a((x-y)(x+y))
=㏒ax+㏒ay-㏒a(x+y)-㏒a(x-y)
(3)㏒a(x+y分之x-y ·y)=㏒a(x+y分之x-y)+㏒ay
=㏒a(x-y)-㏒a(x+y)+㏒ay
(4)㏒a[y/x(x-y)]^-3=-3㏒a[y/x(x-y)]
=-3[㏒ay-㏒a[x(x-y)]]
=-3[㏒ay-㏒ax-㏒a(x-y)]
=-3㏒ay+3㏒ax+3㏒a(x-y)
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