已知函數(shù)f(x)=a[2sin^2(x/2)+sinx]+b
已知函數(shù)f(x)=a[2sin^2(x/2)+sinx]+b
(1)當(dāng)a=1時(shí),求f(x)的單調(diào)遞減區(qū)間
（2)當(dāng)a
(1)當(dāng)a=1時(shí),求f(x)的單調(diào)遞減區(qū)間
（2)當(dāng)a
數(shù)學(xué)人氣：575 ℃時(shí)間：2020-04-02 23:06:50
優(yōu)質(zhì)解答
（1)由于f(x)=a[2sin^2(x/2)+sinx]+b= a[1-cosx+sinx]+b=a(sinx-cosx)+a+b=根2×a((根2/2)sinx-(根2/2)cosx)+a+b= 根2×a×sin(x-π/4)+a+b從而當(dāng)a=1時(shí),f(x)的單調(diào)遞減區(qū)間為：[2Kπ+(3π/4),2Kπ+(7π/4)](2) 當(dāng)a...
我來(lái)回答
類似推薦
- 已知函數(shù)F(X)=2sin^2 x-sinx+3的最值
- 已知函數(shù)f(x)=(sinx+cosx)^2-2sin的平方·x,求函數(shù)f(x)的最小正周期
- f(x)=2sin(x+π/6)-2cosx,x∈[π/2,π].若sinx=4/5,求函數(shù)f(x)的值
- 已知函數(shù)f(x)=2sin(x+π÷6),x屬于【π÷2,π】,若sinx=4÷5,求函數(shù)f（x）的值.
- 已知函數(shù)f(x)=2sin(x+pai/6)-2cos,x屬于[pai/2,pai].若sinx=4/5求f(x)的值,求函數(shù)f(x)的值域
- 函數(shù)f(x)=sinx-cosx^2的最小值是?
- 英語(yǔ)翻譯
- I took my grandpa to the hospital this morning,_____ I missed the first class.
- So crazy
- 方差是各個(gè)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(cuò)
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(yùn)嗎
- 6邊長(zhǎng)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(jī)械分析天平TG628A的使用說(shuō)明書(shū)
- 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