設函數(shù)f(x)=cos[π/6(x-3)]則f(1)+f(2)+.+f(1001)的值為:解析:
設函數(shù)f(x)=cos[π/6(x-3)]則f(1)+f(2)+.+f(1001)的值為:解析:
數(shù)學人氣:498 ℃時間:2020-06-11 15:45:36
優(yōu)質(zhì)解答
打開括號的f(x)=cos(π/6x-π/2),利用周期公式T=2π/π/6=12,所以從f(1)加到f(12)和從f(13)加到f(24)是一樣的,以此類推,原式1001個分成12個為一組就是83組多5個.又易得(6,0)點為對稱點,所以從f(1)加到f(11)和就是0,...
我來回答
類似推薦
- 已知a=(2,cosx),b=(sin(x+π6),-2),函數(shù)f(x)=a?b. (1)求函數(shù)f(x)的單調(diào)增區(qū)間; (2)若f(x)=6/5,求cos(2x-π3)的值.
- 已知函數(shù)f(x)=√2cos(x-π/12),x∈R求f(3/π)的值 2.若cosθ=3/5,θ€(3/2π,2π)求f(θ-π/6)
- 已知函數(shù)f(x)=1/(1+4^(1/2 -x)),求f(1/1001)+f(2/1001)+f(3/1001)+.+f(1000/1001)的值
- 已知函數(shù)f(x)=sin(x-π/6)+cos(x-π/3)g(x)=2sin²x/2
- 已知函數(shù)f(x)=4sin(π/2+x/2)cos(x/2+π/6)
- 函數(shù)f(x)=sinx-cosx^2的最小值是?
- 英語翻譯
- I took my grandpa to the hospital this morning,_____ I missed the first class.
- So crazy
- 方差是各個數(shù)據(jù)與平均數(shù)之差的平方的平均數(shù)
- 函數(shù)y=f(x)與它反函數(shù)y=f^-1(x)怎么讀?
- These are photos of my families.Look at them 改錯
猜你喜歡
- 1平面與平面重合,是否屬于平行一類?那重合的兩直線,也屬于平行一類的嗎?
- 2非洲每年因饑餓死亡的人數(shù)及現(xiàn)在饑餓人口數(shù)量拜托各位了 3Q
- 3decide to do sth.還=什么
- 4(7/8)o you think of london?B:5.____london is one of the liveliest cities
- 5啤酒可以托運嗎
- 6邊長為2√6的等邊三角形的中心到一邊的距離為?
- 7please give your hand to help me
- 8已知2的X次方等于3的Y次方等于6的Z次方不等等于1,證明X分之一加Y分之一等于Z分之一.
- 9幫我做做?
- 10機械分析天平TG628A的使用說明書
- 11in winter ,we wear warm coats to protect our bodies_.
- 12( )was most importance to her ,she told me,was her family it this what as