f(x)=a*sinx+b*tanx+1满足f(派/5)=7,求f(99派/5)=?派就是约等于3.1415926那个
举一反三
- 已知f(x)=asinx+btanx+1,满足f(5)=7,则f(-5)=______.
- 设函数y=f(x)有二阶导数,对任意实数x,满足:f(x)=-f(-x)及f(x)=f(x+1),若f'(1)>0,则有 ( ) A: f"(-5)≤f'(-5)≤f(-5) B: f(-5)=f"(-5)<f'(-5) C: f'(-5)≤f(-5)≤f"(-5) D: f(-5)<f(-5)=f"(-5)
- 【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
- 已知函数f(x)满足:f(p+q)=f(p)f(q),f(1)=3,则f2(1)+f(2)f(1)+f2(2)+f(4)f(3)+f2(3)+f(6)f(5)+f2(4)+f(8)f(7)等于( )
- f(x)=cos4次方x-2sinxcosx-sin4次方x,求f(x)的最小正周期和最大值;当x属于[0,派/2]时,求f(x)的最...