设f(x)满足f(-sinx)+3f(sinx)=4sinx•cosx(|x|≤π2).
设f(x)满足f(-sinx)+3f(sinx)=4sinx•cosx(|x|≤π2).
lim(x→0)(sinx^2)/[(sinx)^2]求极限,x趋于0,
lim(x→0)(sinx^2)/[(sinx)^2]求极限,x趋于0,
x属于(0,pi/2),sinx/x≥2/pi
x属于(0,pi/2),sinx/x≥2/pi
\( y=x^{sinx} \)的导数为( ). A: \(x^{sinx}(cosxlnx+\frac{lnx}{x})\) B: \(x^{sinx}(cosxlnx+\frac{sinx}{x})\) C: \(x^{sinx}(sinxlnx+\frac{lnx}{x})\) D: \(x^{sinx}(sinxlnx+\frac{sinx}{x})\)
\( y=x^{sinx} \)的导数为( ). A: \(x^{sinx}(cosxlnx+\frac{lnx}{x})\) B: \(x^{sinx}(cosxlnx+\frac{sinx}{x})\) C: \(x^{sinx}(sinxlnx+\frac{lnx}{x})\) D: \(x^{sinx}(sinxlnx+\frac{sinx}{x})\)
lim(x趋向于0)(1-cosx^2)/((x^3)*sinx)
lim(x趋向于0)(1-cosx^2)/((x^3)*sinx)
当x趋近于0时{0到x(sinx)^2的定积分/(sinx)^3}的极限
当x趋近于0时{0到x(sinx)^2的定积分/(sinx)^3}的极限
lim(1/(sinx)^2-cosx*cox/x^2)=?x.0
lim(1/(sinx)^2-cosx*cox/x^2)=?x.0
设f(x)=x2•sinx,则f′(π2)=______.
设f(x)=x2•sinx,则f′(π2)=______.
设f(sinx/2)=1+cosx,则f(x)=?
设f(sinx/2)=1+cosx,则f(x)=?
【单选题】5.设f 0 (x)=sinx,f 1 (x)=f 0 ′(x),f 2 (x)=f 1 ′(x),...,f n +1 (x)=f n ′(x),n∈N,则f 2011 (x)等于() A. sinx B. -sinx C. cosx D. -cosx
【单选题】5.设f 0 (x)=sinx,f 1 (x)=f 0 ′(x),f 2 (x)=f 1 ′(x),...,f n +1 (x)=f n ′(x),n∈N,则f 2011 (x)等于() A. sinx B. -sinx C. cosx D. -cosx