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  • 求下列函數(shù)的單調(diào)區(qū)間 (2)y=cos(TT/4-2x)的單調(diào)減區(qū)間 (3)y=tan(2x-TT/3)的單調(diào)區(qū)間

    求下列函數(shù)的單調(diào)區(qū)間 (2)y=cos(TT/4-2x)的單調(diào)減區(qū)間 (3)y=tan(2x-TT/3)的單調(diào)區(qū)間
    y=2sin(TT/3-x)的單調(diào)區(qū)間
    數(shù)學(xué)人氣:234 ℃時(shí)間:2019-08-19 17:49:29
    優(yōu)質(zhì)解答
    (2)y=cos(TT/4-2x)的單調(diào)減區(qū)間
    2kπ<=TT/4-2x<=2kπ+π
    即得,單調(diào)減區(qū)間:
    -kπ-3π/8<=x<=-kπ+π/8
    (3)y=tan(2x-TT/3)的單調(diào)區(qū)間
    2kπ-π/2<=2x-TT/3<=2kπ+π/2
    即得,單調(diào)增區(qū)間:
    kπ-π/12<=x<=kπ+5π/12y=2sin(TT/3-x)的單調(diào)增區(qū)間2kπ-π/2<=TT/3-x<=2kπ+π/2y=2sin(TT/3-x)的單調(diào)增區(qū)間-2kπ-π/6<=x<=-2kπ+5π/62kπ+π/2<=TT/3-x<=2kπ+3π/2y=2sin(TT/3-x)的單調(diào)減區(qū)間-2kπ-7π/6<=x<=-2kπ-π/6以上k∈Z
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