来自刘文静的问题
大学高数求导数要过程y=arctan[(x+1)/(x-1)]
大学高数求导数要过程y=arctan[(x+1)/(x-1)]
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2020-05-06 18:51
大学高数求导数要过程y=arctan[(x+1)/(x-1)]
大学高数求导数要过程y=arctan[(x+1)/(x-1)]
y=arctan(x+1)/(x-1)
y'=1/[1+(x+1)^2/(x-1)^2]*[(x+1)/(x-1)]'复合函数求导法则
=1/[1+(x+1)^2/(x-1)^2]*[(x-1)-(x+1)]/(x-1)^2
=-2/[(x+1)^2+(x-1)^2]
=-1/(x^2+1)