用定积分的换元法计算下列积分：[tex=6.429x2.857]h0oFNrNfDLkjvUWNl512sP+JRaF3yqtsW7cfeYwurI5brE1U0DZqaIj/cedvLIye[/tex]
用定积分的换元法计算下列积分：[tex=6.429x2.857]h0oFNrNfDLkjvUWNl512sP+JRaF3yqtsW7cfeYwurI5brE1U0DZqaIj/cedvLIye[/tex]
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