求lim (sin^2x+x)/(cos^2x-x) x趋向于无穷
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求lim (sin^2x+x)/(cos^2x-x) x趋向于无穷
求lim (sin^2x+x)/(cos^2x-x) x趋向于无穷
求lim (sin^2x+x)/(cos^2x-x) x趋向于无穷
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=【0+1]/[0-1]=-1
求lim (sin^2x+x)/(cos^2x-x) x趋向于无穷
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