tan(x+π/4)+tan(x-π/4)化简得
tan(6/π--x)+tan(6/π+x)+根号三倍的tan(6/π--x)乘tan(6/π+x)化简求值
求tan(x+π/4)的定义域
1)tan(x/2+π/4)+tan(x/2-π/4)=2tanx
tan(X/2+π/4)+tan(x/2-π/4)=2tanx?
求证:tan(x/2+π/4)+tan(x/2-π/4)=2tanx
高一数学y=tan(x+π/4)+1/tan(x+π/4)
tan( x/2+π/4)+tan(x/2-π/4 )=2tanx
tan(x/2+ π4)+tan(x/2- π/4)=2tanx
limx趋于0,求tan(x+πsinx/4x)
函数f(x)=tan(x+π4)
证明sec x+tanx=tan(π/4 +x/2)
lim (x→0) [tan( π/4 - x )]^(cotx)=?