f(x)=sin(π 3 4x) cos(4x-π 6)

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f(x)=sin(π 3 4x) cos(4x-π 6)
已知函数f(x)=sin(2x+π/3)

1、由于函数g(x)=sin(2(x-a)+π/3)为偶函数,所以g(x)的图像关于y轴对称,即函数g(x)当x=0时取得最值,所以g(0)=±1,解得sin(π/3-2a)=±1,sin(2a-π/

已知函数f(x)=2sin(π-x)cosx

∵f(x)=2sin(π-x)cosx=2sinxcosx=sin2x1、最小正周期T=2π/2=π.2、∵-π/6≤x≤π/2∴-π/3≤2x≤π,∴-√3/2≤f(x)≤1,∴最大值1,最小值-√

用C语言编程函数F(x)=sinπx+logx在x=0.2时的值

#include#include/*要使用正余弦函数必须包含math.h头文件*/#definePI3.14doubleF(x){returnsin(PI*x)+log(x);/*sin和log函数内

设函数f(x)=sin(2x+φ)(-π

你啊,要好好学习了!还没有悬赏分?把对称轴即x=∏/8代入原式子,即sin(∏/4+φ)=1或者-1,再用(-π

已知函数f(x)=sin(π/2-x)+sinx

f(x)=cosx+sinxf(x)=√2sin(x+π/4)(1)递增区间:2kπ-π/2≤x+π/4≤2kπ+π/2得:2kπ-3/4π≤x≤2kπ+π/4递增区间是:[2kπ-3π/4,2kπ+

函数f(x)=sinx-sin(x-π3

f(x)=sinx-sin(x-π3)=12sinx+32cosx=sin(x+π3)∴函数f(x)=sinx-sin(x-π3)的最大值为1故答案为:1

∫f(x)dx=ln[sin(3x+1)]+C.求f(x)

f(x)={ln[sin(3x+1)]+C}'=1/sin(3x+1)*cos(3x+1)*3=3cot(3x+1)

已知函数f(x)=2sin(π-x)sin(π/2-x)

f(x)=2sin(π-x)sin(π/2-x)=2sinxcosx=sin2x1)最小正周期=2π/2=π2)在区间[-派/6,派/2]上x=π/4时,有最大值=sinπ/2=1x=-π/6时,有最

已知f(x)=2sin(2x+π/6),

π2x+π/6属于[π/2+2kπ,3π/2+2kπ]时为减区间,所以x属于[π/6+kπ,2π/3+kπ],k属于Z列表:三行2x+π/60π/2π3π/22πx(根据上面一行的值求出x对应的值)f

已知函数f(x)=sinx+sin(x+π/2) ,

因为f(x)=sinx+cosx=√2sin(x+π/4)第一题T=2π/1=2π第二题当sin(x+π/4)=1时,为最大值,即f(x)=√2sin(x+π/4)=-1时,为最小值,即f(x)=-√

设函数f(x)=sinx+sin(x+π/3)

1)由三角函数和差化积公式:f(x)=2sin(x+x+π/3)/2cos(x-x-π/3)/2=2sin(x+π/6)cos(π/6)=√3sin(x+π/6)f(x)的最小值为-√3.当x+π/6

函数f(x)=sin(2x+a) -π

f(-x)=f(x)所以sin(-2x+a)=sin(2x+a)所以-2x+a=2kπ+2x+a或2x+a=2kπ+π-(2x+a)这是恒等式而-2x+a=2kπ+2x+a,2kπ+4x=0不是恒等式

已知f(x)=sin

(根号2+根号6)÷4再问:如何做的??????????谢谢

高中数学:已知函数f(x)=2sin(x+π/2).sin(x+7π/3)-

fx=2cosx(0.5sinx+根号3/2cosx)-根号3sin*2x+sinxcosx=2sinxcosx+根号3(cos*2x-sin*2x)=sin2x+根号3cos2x=2sin(2x+派

已知函数f(x)=cos2x/[sin(π/4-x)]

cos2x=sin(π/2-2x)=2sin(π/4-x)cos(π/4-x)cos2x/[sin(π/4-x)]=2sin(π/4-x)cos(π/4-x)/[sin(π/4-x)]=2cos(π/

证明f(x)=sgn(sinπ/x)可积

定义域是什么?再问:【0,正无穷】,f(x)=o(x=o)再答:不对吧。当x>1时,sin(pi/x)>0,sgn(sinpi/x)=1,在【1,+无穷)上积分不收敛,不可积啊。定义域应该是某个有界闭

设函数 f(x)=sin(2x+y),(-π

f(x)=sin2(x+y/2)由于sin2x对称轴为π/4+kπ/2;故x+y/2=π/4+kπ/2x=π/4+kπ/2-y/2;将x=x=π/8代入,得y=π/4+kπ,根据y的范围可知:y=-3

已知函数f(x)=2cos(x-π/6)sin(x+π/6)-√3*(sin(x-π/6))^2+sin(x-π/6)c

f(x)=2cos(x-π/6)sin(x+π/6)-√3*(sin(x-π/6))^2+sin(x-π/6)cos(x-π/6)=sin2x+sin(π/3)-(√3/2)[1-cos(2x-π/3

设函数f x=SIN(2X+φ)(-π

1)f(x)=sin(2x+φ)一条对称轴是X=π/8则kπ+π/2=2*π/8+φ===>φ=kπ+π/4因为-π

设函数f(x)=sin(2x+ φ)(-π

1.由f(x)=sin(2x+φ)一条对称轴是直线x=π/2可得:在x=π/2时,函数取极值.则2*π/2+φ=kπ+π/2(k∈Z)φ=kπ-π/2又-π