当0<=x<π/2时,上式等价于sinx/2=sinx/2 +cosx/2 + sinx/2 - cosx/2 = 2sinx/2,即sinx/2=0,则x=0,则 tanx=0;
当π/2
推荐
- limx→0(sinx-tanx)/{[三次根号下(1+x^2)-1]*[根号下(1+sinx)-1]}
- 若x∈[0,2π),则函数f(x)=根号下sinx+根号下tanx的定义域是
- 根号(1+tanx)-根号(sinx+1)/x^3求趋于零极限
- 已知sinx/2-2cosx/2=0,求tanx的值;求(cos2x)/(根号2cos(π/4+x)*sinx)的值
- 已知函数f(x)=sinx/2-2cosx/2=0 (1)求tanx的值 (2)求cos2x/根号2cos(π/4+x)Xsinx的值
- 已知a+2b+3c=m,a+3B+4c=m,则b和c的关系为?
- mike explains that pretending to be at the beach is as good as being there
- 已知复数Z满足2Z-4=(3+Z)i,求|Z+i
猜你喜欢
