利用等价无穷小量计算极限 1,x趋近于0时(cos2x-cos3x)/(√(1+x^2)-1)2,x趋近于0时(e^x-1)sinx/(1-cosx) 3,x趋近于无穷时x^2(1-cos(1/x)) 4,讨论函数f(x)=e^x(x<0);f(x)=4(x=0);f(x)=1+x(x>0)在x=0及x=1处的连续
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![利用等价无穷小量计算极限 1,x趋近于0时(cos2x-cos3x)/(√(1+x^2)-1)2,x趋近于0时(e^x-1)sinx/(1-cosx) 3,x趋近于无穷时x^2(1-cos(1/x)) 4,讨论函数f(x)=e^x(x<0);f(x)=4(x=0);f(x)=1+x(x>0)在x=0及x=1处的连续](/uploads/image/z/7284670-70-0.jpg?t=%E5%88%A9%E7%94%A8%E7%AD%89%E4%BB%B7%E6%97%A0%E7%A9%B7%E5%B0%8F%E9%87%8F%E8%AE%A1%E7%AE%97%E6%9E%81%E9%99%90+1%2Cx%E8%B6%8B%E8%BF%91%E4%BA%8E0%E6%97%B6%28cos2x-cos3x%29%2F%28%E2%88%9A%EF%BC%881%2Bx%5E2%29-1%292%2Cx%E8%B6%8B%E8%BF%91%E4%BA%8E0%E6%97%B6%EF%BC%88e%5Ex-1%29sinx%2F%281-cosx%29+3%2Cx%E8%B6%8B%E8%BF%91%E4%BA%8E%E6%97%A0%E7%A9%B7%E6%97%B6x%5E2%281-cos%281%2Fx%29%29+4%2C%E8%AE%A8%E8%AE%BA%E5%87%BD%E6%95%B0f%28x%29%3De%5Ex%28x%EF%BC%9C0%EF%BC%89%EF%BC%9Bf%28x%29%3D4%EF%BC%88x%3D0%29%3Bf%28x%29%3D1%2Bx%28x%EF%BC%9E0%EF%BC%89%E5%9C%A8x%3D0%E5%8F%8Ax%3D1%E5%A4%84%E7%9A%84%E8%BF%9E%E7%BB%AD)
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