函数f(x)=sin( 2x+1)的周期是______ .
举一反三
- 【单选题】如图所示,函数f(x)=sin(ωx+φ) 的图象与二次函数y=- x 2 + x+1的图象交于点A(x 1 ,0)和B(x 2 ,1),则f(x)的解析式为() A. f(x)=sin B. f(x)=sin C. f(x)=sin D. f(x)=sin
- 17e0b849d3a4a3b.jpg,计算[img=19x34]17e0ab14a855463.jpg[/img]的实验命令为( ). A: syms x; f=diff((1+sin(x)^2)/cos(x),1)f=2*sin(x) + (sin(x)*(sin(x)^2 + 1))/cos(x)^2 B: f=diff((1+sinx^2)/cosx,1)f=1/2/x^(1/2)/(1-x)^(1/2) C: syms x;f=diff((1+sinx^2)/cosx,1)f=2*sin(x) + (sin(x)*(sin(x)^2 + 1))/cos(x)^2
- 函数f(x)=sin^2x-1/2的最小正周期
- 函数y=sin(1/x)的周期为2π
- 1.下列函数中,在定义域上无界的函数是 A: $f(x)=\frac{1}{x}\sin x$ B: $f(x)=x^2\sin \frac{1}{x}$ C: $f(x)=\frac{\ln x}{1+{{\ln }^{2}}x}$ D: $f(x)=\frac{1}{{{\text{e}}^{x}}+{{\text{e}}^{-x}}}$