arctan(1/3)+arctan(1/2)的值为?
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arctan(1/3)+arctan(1/2)的值为?
arctan√3和arctan(1/√3)等于多少
(arctan√3) - (arctan-1)求解
级数求和:arctan(1/2)+arctan(1/2^2)+arctan(1/2^3)+...+arctan(1/2^n)+...
cos[arctan(1/2) - arctan(-2)]=?
arctan-1等于多少
arctan(1/x)求导
arctan
求值:sin[1/2arctan(-4/3)]
计算cos(1/2arctan(-3/4))
arctan(-2)+arctan(-3)=?
cos[1/2arctan(-3/4)].cos[1/2arctan(-3/4)]=
用复变函数证明arctan (1/2) + arctan (1/3) =π/4
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计算:arctan(1-x)+arctan(1+x)的值
arctan1-arctan-1等于什么?
谁帮求下反三角函数值 arctan(-1)
arctan(1/2)?是多少?谢谢