求y=lim(x→(π/4))((sinx-cosx)/(1-(tan^2(x)))的值

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求y=lim(x→(π/4))((sinx-cosx)/(1-(tan^2(x)))的值求y=lim(x→(π/4))((sinx-cosx)/(1-(tan^2(x)))的值求y=lim(x→(π/

求y=lim(x→(π/4))((sinx-cosx)/(1-(tan^2(x)))的值
求y=lim(x→(π/4))((sinx-cosx)/(1-(tan^2(x)))的值

求y=lim(x→(π/4))((sinx-cosx)/(1-(tan^2(x)))的值